diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/ni_mio_common.c')
| -rw-r--r-- | drivers/staging/comedi/drivers/ni_mio_common.c | 5862 |
1 files changed, 5862 insertions, 0 deletions
diff --git a/drivers/staging/comedi/drivers/ni_mio_common.c b/drivers/staging/comedi/drivers/ni_mio_common.c new file mode 100644 index 000000000000..542bd0dcd44d --- /dev/null +++ b/drivers/staging/comedi/drivers/ni_mio_common.c @@ -0,0 +1,5862 @@ +/* + comedi/drivers/ni_mio_common.c + Hardware driver for DAQ-STC based boards + + COMEDI - Linux Control and Measurement Device Interface + Copyright (C) 1997-2001 David A. Schleef <ds@schleef.org> + Copyright (C) 2002-2006 Frank Mori Hess <fmhess@users.sourceforge.net> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + +*/ + +/* + This file is meant to be included by another file, e.g., + ni_atmio.c or ni_pcimio.c. + + Interrupt support originally added by Truxton Fulton + <trux@truxton.com> + + References (from ftp://ftp.natinst.com/support/manuals): + + 340747b.pdf AT-MIO E series Register Level Programmer Manual + 341079b.pdf PCI E Series RLPM + 340934b.pdf DAQ-STC reference manual + 67xx and 611x registers (from http://www.ni.com/pdf/daq/us) + release_ni611x.pdf + release_ni67xx.pdf + Other possibly relevant info: + + 320517c.pdf User manual (obsolete) + 320517f.pdf User manual (new) + 320889a.pdf delete + 320906c.pdf maximum signal ratings + 321066a.pdf about 16x + 321791a.pdf discontinuation of at-mio-16e-10 rev. c + 321808a.pdf about at-mio-16e-10 rev P + 321837a.pdf discontinuation of at-mio-16de-10 rev d + 321838a.pdf about at-mio-16de-10 rev N + + ISSUES: + + - the interrupt routine needs to be cleaned up + + 2006-02-07: S-Series PCI-6143: Support has been added but is not + fully tested as yet. Terry Barnaby, BEAM Ltd. +*/ + +//#define DEBUG_INTERRUPT +//#define DEBUG_STATUS_A +//#define DEBUG_STATUS_B + +#include "8255.h" +#include "mite.h" +#include "comedi_fc.h" + +#ifndef MDPRINTK +#define MDPRINTK(format,args...) +#endif + +/* A timeout count */ +#define NI_TIMEOUT 1000 +static const unsigned old_RTSI_clock_channel = 7; + +/* Note: this table must match the ai_gain_* definitions */ +static const short ni_gainlkup[][16] = { + [ai_gain_16] = {0, 1, 2, 3, 4, 5, 6, 7, + 0x100, 0x101, 0x102, 0x103, 0x104, 0x105, 0x106, 0x107}, + [ai_gain_8] = {1, 2, 4, 7, 0x101, 0x102, 0x104, 0x107}, + [ai_gain_14] = {1, 2, 3, 4, 5, 6, 7, + 0x101, 0x102, 0x103, 0x104, 0x105, 0x106, 0x107}, + [ai_gain_4] = {0, 1, 4, 7}, + [ai_gain_611x] = {0x00a, 0x00b, 0x001, 0x002, + 0x003, 0x004, 0x005, 0x006}, + [ai_gain_622x] = {0, 1, 4, 5}, + [ai_gain_628x] = {1, 2, 3, 4, 5, 6, 7}, + [ai_gain_6143] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, +}; + +static const struct comedi_lrange range_ni_E_ai = { 16, { + RANGE(-10, 10), + RANGE(-5, 5), + RANGE(-2.5, 2.5), + RANGE(-1, 1), + RANGE(-0.5, 0.5), + RANGE(-0.25, 0.25), + RANGE(-0.1, 0.1), + RANGE(-0.05, 0.05), + RANGE(0, 20), + RANGE(0, 10), + RANGE(0, 5), + RANGE(0, 2), + RANGE(0, 1), + RANGE(0, 0.5), + RANGE(0, 0.2), + RANGE(0, 0.1), + } +}; +static const struct comedi_lrange range_ni_E_ai_limited = { 8, { + RANGE(-10, 10), + RANGE(-5, 5), + RANGE(-1, 1), + RANGE(-0.1, 0.1), + RANGE(0, 10), + RANGE(0, 5), + RANGE(0, 1), + RANGE(0, 0.1), + } +}; +static const struct comedi_lrange range_ni_E_ai_limited14 = { 14, { + RANGE(-10, 10), + RANGE(-5, 5), + RANGE(-2, 2), + RANGE(-1, 1), + RANGE(-0.5, 0.5), + RANGE(-0.2, 0.2), + RANGE(-0.1, 0.1), + RANGE(0, 10), + RANGE(0, 5), + RANGE(0, 2), + RANGE(0, 1), + RANGE(0, 0.5), + RANGE(0, 0.2), + RANGE(0, 0.1), + } +}; +static const struct comedi_lrange range_ni_E_ai_bipolar4 = { 4, { + RANGE(-10, 10), + RANGE(-5, 5), + RANGE(-0.5, 0.5), + RANGE(-0.05, 0.05), + } +}; +static const struct comedi_lrange range_ni_E_ai_611x = { 8, { + RANGE(-50, 50), + RANGE(-20, 20), + RANGE(-10, 10), + RANGE(-5, 5), + RANGE(-2, 2), + RANGE(-1, 1), + RANGE(-0.5, 0.5), + RANGE(-0.2, 0.2), + } +}; +static const struct comedi_lrange range_ni_M_ai_622x = { 4, { + RANGE(-10, 10), + RANGE(-5, 5), + RANGE(-1, 1), + RANGE(-0.2, 0.2), + } +}; +static const struct comedi_lrange range_ni_M_ai_628x = { 7, { + RANGE(-10, 10), + RANGE(-5, 5), + RANGE(-2, 2), + RANGE(-1, 1), + RANGE(-0.5, 0.5), + RANGE(-0.2, 0.2), + RANGE(-0.1, 0.1), + } +}; +static const struct comedi_lrange range_ni_S_ai_6143 = { 1, { + RANGE(-5, +5), + } +}; +static const struct comedi_lrange range_ni_E_ao_ext = { 4, { + RANGE(-10, 10), + RANGE(0, 10), + RANGE_ext(-1, 1), + RANGE_ext(0, 1), + } +}; + +static const struct comedi_lrange *const ni_range_lkup[] = { + [ai_gain_16] = &range_ni_E_ai, + [ai_gain_8] = &range_ni_E_ai_limited, + [ai_gain_14] = &range_ni_E_ai_limited14, + [ai_gain_4] = &range_ni_E_ai_bipolar4, + [ai_gain_611x] = &range_ni_E_ai_611x, + [ai_gain_622x] = &range_ni_M_ai_622x, + [ai_gain_628x] = &range_ni_M_ai_628x, + [ai_gain_6143] = &range_ni_S_ai_6143 +}; + +static int ni_dio_insn_config(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data); +static int ni_dio_insn_bits(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data); +static int ni_cdio_cmdtest(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_cmd * cmd); +static int ni_cdio_cmd(struct comedi_device * dev, struct comedi_subdevice * s); +static int ni_cdio_cancel(struct comedi_device * dev, struct comedi_subdevice * s); +static void handle_cdio_interrupt(struct comedi_device * dev); +static int ni_cdo_inttrig(struct comedi_device * dev, struct comedi_subdevice * s, + unsigned int trignum); + +static int ni_serial_insn_config(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data); +static int ni_serial_hw_readwrite8(struct comedi_device * dev, struct comedi_subdevice * s, + unsigned char data_out, unsigned char *data_in); +static int ni_serial_sw_readwrite8(struct comedi_device * dev, struct comedi_subdevice * s, + unsigned char data_out, unsigned char *data_in); + +static int ni_calib_insn_read(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data); +static int ni_calib_insn_write(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data); + +static int ni_eeprom_insn_read(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data); +static int ni_m_series_eeprom_insn_read(struct comedi_device * dev, + struct comedi_subdevice * s, struct comedi_insn * insn, unsigned int * data); + +static int ni_pfi_insn_bits(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data); +static int ni_pfi_insn_config(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data); +static unsigned ni_old_get_pfi_routing(struct comedi_device * dev, unsigned chan); + +static void ni_rtsi_init(struct comedi_device * dev); +static int ni_rtsi_insn_bits(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data); +static int ni_rtsi_insn_config(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data); + +static void caldac_setup(struct comedi_device * dev, struct comedi_subdevice * s); +static int ni_read_eeprom(struct comedi_device * dev, int addr); + +#ifdef DEBUG_STATUS_A +static void ni_mio_print_status_a(int status); +#else +#define ni_mio_print_status_a(a) +#endif +#ifdef DEBUG_STATUS_B +static void ni_mio_print_status_b(int status); +#else +#define ni_mio_print_status_b(a) +#endif + +static int ni_ai_reset(struct comedi_device * dev, struct comedi_subdevice * s); +#ifndef PCIDMA +static void ni_handle_fifo_half_full(struct comedi_device * dev); +static int ni_ao_fifo_half_empty(struct comedi_device * dev, struct comedi_subdevice * s); +#endif +static void ni_handle_fifo_dregs(struct comedi_device * dev); +static int ni_ai_inttrig(struct comedi_device * dev, struct comedi_subdevice * s, + unsigned int trignum); +static void ni_load_channelgain_list(struct comedi_device * dev, unsigned int n_chan, + unsigned int *list); +static void shutdown_ai_command(struct comedi_device * dev); + +static int ni_ao_inttrig(struct comedi_device * dev, struct comedi_subdevice * s, + unsigned int trignum); + +static int ni_ao_reset(struct comedi_device * dev, struct comedi_subdevice * s); + +static int ni_8255_callback(int dir, int port, int data, unsigned long arg); + +static int ni_gpct_insn_write(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data); +static int ni_gpct_insn_read(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data); +static int ni_gpct_insn_config(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data); +static int ni_gpct_cmd(struct comedi_device * dev, struct comedi_subdevice * s); +static int ni_gpct_cmdtest(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_cmd * cmd); +static int ni_gpct_cancel(struct comedi_device * dev, struct comedi_subdevice * s); +static void handle_gpct_interrupt(struct comedi_device * dev, + unsigned short counter_index); + +static int init_cs5529(struct comedi_device * dev); +static int cs5529_do_conversion(struct comedi_device * dev, unsigned short *data); +static int cs5529_ai_insn_read(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data); +#ifdef NI_CS5529_DEBUG +static unsigned int cs5529_config_read(struct comedi_device * dev, + unsigned int reg_select_bits); +#endif +static void cs5529_config_write(struct comedi_device * dev, unsigned int value, + unsigned int reg_select_bits); + +static int ni_m_series_pwm_config(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data); +static int ni_6143_pwm_config(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data); + +static int ni_set_master_clock(struct comedi_device * dev, unsigned source, + unsigned period_ns); +static void ack_a_interrupt(struct comedi_device * dev, unsigned short a_status); +static void ack_b_interrupt(struct comedi_device * dev, unsigned short b_status); + +enum aimodes { + AIMODE_NONE = 0, + AIMODE_HALF_FULL = 1, + AIMODE_SCAN = 2, + AIMODE_SAMPLE = 3, +}; + +enum ni_common_subdevices { + NI_AI_SUBDEV, + NI_AO_SUBDEV, + NI_DIO_SUBDEV, + NI_8255_DIO_SUBDEV, + NI_UNUSED_SUBDEV, + NI_CALIBRATION_SUBDEV, + NI_EEPROM_SUBDEV, + NI_PFI_DIO_SUBDEV, + NI_CS5529_CALIBRATION_SUBDEV, + NI_SERIAL_SUBDEV, + NI_RTSI_SUBDEV, + NI_GPCT0_SUBDEV, + NI_GPCT1_SUBDEV, + NI_FREQ_OUT_SUBDEV, + NI_NUM_SUBDEVICES +}; +static inline unsigned NI_GPCT_SUBDEV(unsigned counter_index) +{ + switch (counter_index) { + case 0: + return NI_GPCT0_SUBDEV; + break; + case 1: + return NI_GPCT1_SUBDEV; + break; + default: + break; + } + BUG(); + return NI_GPCT0_SUBDEV; +} + +enum timebase_nanoseconds { + TIMEBASE_1_NS = 50, + TIMEBASE_2_NS = 10000 +}; + +#define SERIAL_DISABLED 0 +#define SERIAL_600NS 600 +#define SERIAL_1_2US 1200 +#define SERIAL_10US 10000 + +static const int num_adc_stages_611x = 3; + +static void handle_a_interrupt(struct comedi_device * dev, unsigned short status, + unsigned ai_mite_status); +static void handle_b_interrupt(struct comedi_device * dev, unsigned short status, + unsigned ao_mite_status); +static void get_last_sample_611x(struct comedi_device * dev); +static void get_last_sample_6143(struct comedi_device * dev); + +static inline void ni_set_bitfield(struct comedi_device * dev, int reg, + unsigned bit_mask, unsigned bit_values) +{ + unsigned long flags; + + comedi_spin_lock_irqsave(&devpriv->soft_reg_copy_lock, flags); + switch (reg) { + case Interrupt_A_Enable_Register: + devpriv->int_a_enable_reg &= ~bit_mask; + devpriv->int_a_enable_reg |= bit_values & bit_mask; + devpriv->stc_writew(dev, devpriv->int_a_enable_reg, + Interrupt_A_Enable_Register); + break; + case Interrupt_B_Enable_Register: + devpriv->int_b_enable_reg &= ~bit_mask; + devpriv->int_b_enable_reg |= bit_values & bit_mask; + devpriv->stc_writew(dev, devpriv->int_b_enable_reg, + Interrupt_B_Enable_Register); + break; + case IO_Bidirection_Pin_Register: + devpriv->io_bidirection_pin_reg &= ~bit_mask; + devpriv->io_bidirection_pin_reg |= bit_values & bit_mask; + devpriv->stc_writew(dev, devpriv->io_bidirection_pin_reg, + IO_Bidirection_Pin_Register); + break; + case AI_AO_Select: + devpriv->ai_ao_select_reg &= ~bit_mask; + devpriv->ai_ao_select_reg |= bit_values & bit_mask; + ni_writeb(devpriv->ai_ao_select_reg, AI_AO_Select); + break; + case G0_G1_Select: + devpriv->g0_g1_select_reg &= ~bit_mask; + devpriv->g0_g1_select_reg |= bit_values & bit_mask; + ni_writeb(devpriv->g0_g1_select_reg, G0_G1_Select); + break; + default: + rt_printk("Warning %s() called with invalid register\n", + __FUNCTION__); + rt_printk("reg is %d\n", reg); + break; + } + mmiowb(); + comedi_spin_unlock_irqrestore(&devpriv->soft_reg_copy_lock, flags); +} + +#ifdef PCIDMA +static int ni_ai_drain_dma(struct comedi_device * dev); + +/* DMA channel setup */ + +// negative channel means no channel +static inline void ni_set_ai_dma_channel(struct comedi_device * dev, int channel) +{ + unsigned bitfield; + + if (channel >= 0) { + bitfield = + (ni_stc_dma_channel_select_bitfield(channel) << + AI_DMA_Select_Shift) & AI_DMA_Select_Mask; + } else { + bitfield = 0; + } + ni_set_bitfield(dev, AI_AO_Select, AI_DMA_Select_Mask, bitfield); +} + +// negative channel means no channel +static inline void ni_set_ao_dma_channel(struct comedi_device * dev, int channel) +{ + unsigned bitfield; + + if (channel >= 0) { + bitfield = + (ni_stc_dma_channel_select_bitfield(channel) << + AO_DMA_Select_Shift) & AO_DMA_Select_Mask; + } else { + bitfield = 0; + } + ni_set_bitfield(dev, AI_AO_Select, AO_DMA_Select_Mask, bitfield); +} + +// negative mite_channel means no channel +static inline void ni_set_gpct_dma_channel(struct comedi_device * dev, + unsigned gpct_index, int mite_channel) +{ + unsigned bitfield; + + if (mite_channel >= 0) { + bitfield = GPCT_DMA_Select_Bits(gpct_index, mite_channel); + } else { + bitfield = 0; + } + ni_set_bitfield(dev, G0_G1_Select, GPCT_DMA_Select_Mask(gpct_index), + bitfield); +} + +// negative mite_channel means no channel +static inline void ni_set_cdo_dma_channel(struct comedi_device * dev, int mite_channel) +{ + unsigned long flags; + + comedi_spin_lock_irqsave(&devpriv->soft_reg_copy_lock, flags); + devpriv->cdio_dma_select_reg &= ~CDO_DMA_Select_Mask; + if (mite_channel >= 0) { + /*XXX just guessing ni_stc_dma_channel_select_bitfield() returns the right bits, + under the assumption the cdio dma selection works just like ai/ao/gpct. + Definitely works for dma channels 0 and 1. */ + devpriv->cdio_dma_select_reg |= + (ni_stc_dma_channel_select_bitfield(mite_channel) << + CDO_DMA_Select_Shift) & CDO_DMA_Select_Mask; + } + ni_writeb(devpriv->cdio_dma_select_reg, M_Offset_CDIO_DMA_Select); + mmiowb(); + comedi_spin_unlock_irqrestore(&devpriv->soft_reg_copy_lock, flags); +} + +static int ni_request_ai_mite_channel(struct comedi_device * dev) +{ + unsigned long flags; + + comedi_spin_lock_irqsave(&devpriv->mite_channel_lock, flags); + BUG_ON(devpriv->ai_mite_chan); + devpriv->ai_mite_chan = + mite_request_channel(devpriv->mite, devpriv->ai_mite_ring); + if (devpriv->ai_mite_chan == NULL) { + comedi_spin_unlock_irqrestore(&devpriv->mite_channel_lock, + flags); + comedi_error(dev, + "failed to reserve mite dma channel for analog input."); + return -EBUSY; + } + devpriv->ai_mite_chan->dir = COMEDI_INPUT; + ni_set_ai_dma_channel(dev, devpriv->ai_mite_chan->channel); + comedi_spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags); + return 0; +} + +static int ni_request_ao_mite_channel(struct comedi_device * dev) +{ + unsigned long flags; + + comedi_spin_lock_irqsave(&devpriv->mite_channel_lock, flags); + BUG_ON(devpriv->ao_mite_chan); + devpriv->ao_mite_chan = + mite_request_channel(devpriv->mite, devpriv->ao_mite_ring); + if (devpriv->ao_mite_chan == NULL) { + comedi_spin_unlock_irqrestore(&devpriv->mite_channel_lock, + flags); + comedi_error(dev, + "failed to reserve mite dma channel for analog outut."); + return -EBUSY; + } + devpriv->ao_mite_chan->dir = COMEDI_OUTPUT; + ni_set_ao_dma_channel(dev, devpriv->ao_mite_chan->channel); + comedi_spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags); + return 0; +} + +static int ni_request_gpct_mite_channel(struct comedi_device * dev, + unsigned gpct_index, enum comedi_io_direction direction) +{ + unsigned long flags; + struct mite_channel *mite_chan; + + BUG_ON(gpct_index >= NUM_GPCT); + comedi_spin_lock_irqsave(&devpriv->mite_channel_lock, flags); + BUG_ON(devpriv->counter_dev->counters[gpct_index].mite_chan); + mite_chan = + mite_request_channel(devpriv->mite, + devpriv->gpct_mite_ring[gpct_index]); + if (mite_chan == NULL) { + comedi_spin_unlock_irqrestore(&devpriv->mite_channel_lock, + flags); + comedi_error(dev, + "failed to reserve mite dma channel for counter."); + return -EBUSY; + } + mite_chan->dir = direction; + ni_tio_set_mite_channel(&devpriv->counter_dev->counters[gpct_index], + mite_chan); + ni_set_gpct_dma_channel(dev, gpct_index, mite_chan->channel); + comedi_spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags); + return 0; +} + +#endif // PCIDMA + +static int ni_request_cdo_mite_channel(struct comedi_device * dev) +{ +#ifdef PCIDMA + unsigned long flags; + + comedi_spin_lock_irqsave(&devpriv->mite_channel_lock, flags); + BUG_ON(devpriv->cdo_mite_chan); + devpriv->cdo_mite_chan = + mite_request_channel(devpriv->mite, devpriv->cdo_mite_ring); + if (devpriv->cdo_mite_chan == NULL) { + comedi_spin_unlock_irqrestore(&devpriv->mite_channel_lock, + flags); + comedi_error(dev, + "failed to reserve mite dma channel for correlated digital outut."); + return -EBUSY; + } + devpriv->cdo_mite_chan->dir = COMEDI_OUTPUT; + ni_set_cdo_dma_channel(dev, devpriv->cdo_mite_chan->channel); + comedi_spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags); +#endif // PCIDMA + return 0; +} + +static void ni_release_ai_mite_channel(struct comedi_device * dev) +{ +#ifdef PCIDMA + unsigned long flags; + + comedi_spin_lock_irqsave(&devpriv->mite_channel_lock, flags); + if (devpriv->ai_mite_chan) { + ni_set_ai_dma_channel(dev, -1); + mite_release_channel(devpriv->ai_mite_chan); + devpriv->ai_mite_chan = NULL; + } + comedi_spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags); +#endif // PCIDMA +} + +static void ni_release_ao_mite_channel(struct comedi_device * dev) +{ +#ifdef PCIDMA + unsigned long flags; + + comedi_spin_lock_irqsave(&devpriv->mite_channel_lock, flags); + if (devpriv->ao_mite_chan) { + ni_set_ao_dma_channel(dev, -1); + mite_release_channel(devpriv->ao_mite_chan); + devpriv->ao_mite_chan = NULL; + } + comedi_spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags); +#endif // PCIDMA +} + +void ni_release_gpct_mite_channel(struct comedi_device * dev, unsigned gpct_index) +{ +#ifdef PCIDMA + unsigned long flags; + + BUG_ON(gpct_index >= NUM_GPCT); + comedi_spin_lock_irqsave(&devpriv->mite_channel_lock, flags); + if (devpriv->counter_dev->counters[gpct_index].mite_chan) { + struct mite_channel *mite_chan = + devpriv->counter_dev->counters[gpct_index].mite_chan; + + ni_set_gpct_dma_channel(dev, gpct_index, -1); + ni_tio_set_mite_channel(&devpriv->counter_dev-> + counters[gpct_index], NULL); + mite_release_channel(mite_chan); + } + comedi_spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags); +#endif // PCIDMA +} + +static void ni_release_cdo_mite_channel(struct comedi_device * dev) +{ +#ifdef PCIDMA + unsigned long flags; + + comedi_spin_lock_irqsave(&devpriv->mite_channel_lock, flags); + if (devpriv->cdo_mite_chan) { + ni_set_cdo_dma_channel(dev, -1); + mite_release_channel(devpriv->cdo_mite_chan); + devpriv->cdo_mite_chan = NULL; + } + comedi_spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags); +#endif // PCIDMA +} + +// e-series boards use the second irq signals to generate dma requests for their counters +#ifdef PCIDMA +static void ni_e_series_enable_second_irq(struct comedi_device * dev, + unsigned gpct_index, short enable) +{ + if (boardtype.reg_type & ni_reg_m_series_mask) + return; + switch (gpct_index) { + case 0: + if (enable) { + devpriv->stc_writew(dev, G0_Gate_Second_Irq_Enable, + Second_IRQ_A_Enable_Register); + } else { + devpriv->stc_writew(dev, 0, + Second_IRQ_A_Enable_Register); + } + break; + case 1: + if (enable) { + devpriv->stc_writew(dev, G1_Gate_Second_Irq_Enable, + Second_IRQ_B_Enable_Register); + } else { + devpriv->stc_writew(dev, 0, + Second_IRQ_B_Enable_Register); + } + break; + default: + BUG(); + break; + } +} +#endif // PCIDMA + +static void ni_clear_ai_fifo(struct comedi_device * dev) +{ + if (boardtype.reg_type == ni_reg_6143) { + // Flush the 6143 data FIFO + ni_writel(0x10, AIFIFO_Control_6143); // Flush fifo + ni_writel(0x00, AIFIFO_Control_6143); // Flush fifo + while (ni_readl(AIFIFO_Status_6143) & 0x10) ; // Wait for complete + } else { + devpriv->stc_writew(dev, 1, ADC_FIFO_Clear); + if (boardtype.reg_type == ni_reg_625x) { + ni_writeb(0, M_Offset_Static_AI_Control(0)); + ni_writeb(1, M_Offset_Static_AI_Control(0)); +#if 0 + /* the NI example code does 3 convert pulses for 625x boards, + but that appears to be wrong in practice. */ + devpriv->stc_writew(dev, AI_CONVERT_Pulse, + AI_Command_1_Register); + devpriv->stc_writew(dev, AI_CONVERT_Pulse, + AI_Command_1_Register); + devpriv->stc_writew(dev, AI_CONVERT_Pulse, + AI_Command_1_Register); +#endif + } + } +} + +static void win_out2(struct comedi_device * dev, uint32_t data, int reg) +{ + devpriv->stc_writew(dev, data >> 16, reg); + devpriv->stc_writew(dev, data & 0xffff, reg + 1); +} + +static uint32_t win_in2(struct comedi_device * dev, int reg) +{ + uint32_t bits; + bits = devpriv->stc_readw(dev, reg) << 16; + bits |= devpriv->stc_readw(dev, reg + 1); + return bits; +} + +#define ao_win_out(data,addr) ni_ao_win_outw(dev,data,addr) +static inline void ni_ao_win_outw(struct comedi_device * dev, uint16_t data, int addr) +{ + unsigned long flags; + + comedi_spin_lock_irqsave(&devpriv->window_lock, flags); + ni_writew(addr, AO_Window_Address_611x); + ni_writew(data, AO_Window_Data_611x); + comedi_spin_unlock_irqrestore(&devpriv->window_lock, flags); +} + +static inline void ni_ao_win_outl(struct comedi_device * dev, uint32_t data, int addr) +{ + unsigned long flags; + + comedi_spin_lock_irqsave(&devpriv->window_lock, flags); + ni_writew(addr, AO_Window_Address_611x); + ni_writel(data, AO_Window_Data_611x); + comedi_spin_unlock_irqrestore(&devpriv->window_lock, flags); +} + +static inline unsigned short ni_ao_win_inw(struct comedi_device * dev, int addr) +{ + unsigned long flags; + unsigned short data; + + comedi_spin_lock_irqsave(&devpriv->window_lock, flags); + ni_writew(addr, AO_Window_Address_611x); + data = ni_readw(AO_Window_Data_611x); + comedi_spin_unlock_irqrestore(&devpriv->window_lock, flags); + return data; +} + +/* ni_set_bits( ) allows different parts of the ni_mio_common driver to +* share registers (such as Interrupt_A_Register) without interfering with +* each other. +* +* NOTE: the switch/case statements are optimized out for a constant argument +* so this is actually quite fast--- If you must wrap another function around this +* make it inline to avoid a large speed penalty. +* +* value should only be 1 or 0. +*/ +static inline void ni_set_bits(struct comedi_device * dev, int reg, unsigned bits, + unsigned value) +{ + unsigned bit_values; + + if (value) + bit_values = bits; + else + bit_values = 0; + ni_set_bitfield(dev, reg, bits, bit_values); +} + +static irqreturn_t ni_E_interrupt(int irq, void *d PT_REGS_ARG) +{ + struct comedi_device *dev = d; + unsigned short a_status; + unsigned short b_status; + unsigned int ai_mite_status = 0; + unsigned int ao_mite_status = 0; + unsigned long flags; +#ifdef PCIDMA + struct mite_struct *mite = devpriv->mite; +#endif + + if (dev->attached == 0) + return IRQ_NONE; + smp_mb(); // make sure dev->attached is checked before handler does anything else. + + // lock to avoid race with comedi_poll + comedi_spin_lock_irqsave(&dev->spinlock, flags); + a_status = devpriv->stc_readw(dev, AI_Status_1_Register); + b_status = devpriv->stc_readw(dev, AO_Status_1_Register); +#ifdef PCIDMA + if (mite) { + unsigned long flags_too; + + comedi_spin_lock_irqsave(&devpriv->mite_channel_lock, + flags_too); + if (devpriv->ai_mite_chan) { + ai_mite_status = mite_get_status(devpriv->ai_mite_chan); + if (ai_mite_status & CHSR_LINKC) + writel(CHOR_CLRLC, + devpriv->mite->mite_io_addr + + MITE_CHOR(devpriv->ai_mite_chan-> + channel)); + } + if (devpriv->ao_mite_chan) { + ao_mite_status = mite_get_status(devpriv->ao_mite_chan); + if (ao_mite_status & CHSR_LINKC) + writel(CHOR_CLRLC, + mite->mite_io_addr + + MITE_CHOR(devpriv->ao_mite_chan-> + channel)); + } + comedi_spin_unlock_irqrestore(&devpriv->mite_channel_lock, + flags_too); + } +#endif + ack_a_interrupt(dev, a_status); + ack_b_interrupt(dev, b_status); + if ((a_status & Interrupt_A_St) || (ai_mite_status & CHSR_INT)) + handle_a_interrupt(dev, a_status, ai_mite_status); + if ((b_status & Interrupt_B_St) || (ao_mite_status & CHSR_INT)) + handle_b_interrupt(dev, b_status, ao_mite_status); + handle_gpct_interrupt(dev, 0); + handle_gpct_interrupt(dev, 1); + handle_cdio_interrupt(dev); + + comedi_spin_unlock_irqrestore(&dev->spinlock, flags); + return IRQ_HANDLED; +} + +#ifdef PCIDMA +static void ni_sync_ai_dma(struct comedi_device * dev) +{ + struct comedi_subdevice *s = dev->subdevices + NI_AI_SUBDEV; + unsigned long flags; + + comedi_spin_lock_irqsave(&devpriv->mite_channel_lock, flags); + if (devpriv->ai_mite_chan) + mite_sync_input_dma(devpriv->ai_mite_chan, s->async); + comedi_spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags); +} + +static void mite_handle_b_linkc(struct mite_struct *mite, struct comedi_device * dev) +{ + struct comedi_subdevice *s = dev->subdevices + NI_AO_SUBDEV; + unsigned long flags; + + comedi_spin_lock_irqsave(&devpriv->mite_channel_lock, flags); + if (devpriv->ao_mite_chan) { + mite_sync_output_dma(devpriv->ao_mite_chan, s->async); + } + comedi_spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags); +} + +static int ni_ao_wait_for_dma_load(struct comedi_device * dev) +{ + static const int timeout = 10000; + int i; + for (i = 0; i < timeout; i++) { + unsigned short b_status; + + b_status = devpriv->stc_readw(dev, AO_Status_1_Register); + if (b_status & AO_FIFO_Half_Full_St) + break; + /* if we poll too often, the pci bus activity seems + to slow the dma transfer down */ + comedi_udelay(10); + } + if (i == timeout) { + comedi_error(dev, "timed out waiting for dma load"); + return -EPIPE; + } + return 0; +} + +#endif //PCIDMA +static void ni_handle_eos(struct comedi_device * dev, struct comedi_subdevice * s) +{ + if (devpriv->aimode == AIMODE_SCAN) { +#ifdef PCIDMA + static const int timeout = 10; + int i; + + for (i = 0; i < timeout; i++) { + ni_sync_ai_dma(dev); + if ((s->async->events & COMEDI_CB_EOS)) + break; + comedi_udelay(1); + } +#else + ni_handle_fifo_dregs(dev); + s->async->events |= COMEDI_CB_EOS; +#endif + } + /* handle special case of single scan using AI_End_On_End_Of_Scan */ + if ((devpriv->ai_cmd2 & AI_End_On_End_Of_Scan)) { + shutdown_ai_command(dev); + } +} + +static void shutdown_ai_command(struct comedi_device * dev) +{ + struct comedi_subdevice *s = dev->subdevices + NI_AI_SUBDEV; + +#ifdef PCIDMA + ni_ai_drain_dma(dev); +#endif + ni_handle_fifo_dregs(dev); + get_last_sample_611x(dev); + get_last_sample_6143(dev); + + s->async->events |= COMEDI_CB_EOA; +} + +static void ni_event(struct comedi_device * dev, struct comedi_subdevice * s) +{ + if (s->async-> + events & (COMEDI_CB_ERROR | COMEDI_CB_OVERFLOW | COMEDI_CB_EOA)) + { + switch (s - dev->subdevices) { + case NI_AI_SUBDEV: + ni_ai_reset(dev, s); + break; + case NI_AO_SUBDEV: + ni_ao_reset(dev, s); + break; + case NI_GPCT0_SUBDEV: + case NI_GPCT1_SUBDEV: + ni_gpct_cancel(dev, s); + break; + case NI_DIO_SUBDEV: + ni_cdio_cancel(dev, s); + break; + default: + break; + } + } + comedi_event(dev, s); +} + +static void handle_gpct_interrupt(struct comedi_device * dev, + unsigned short counter_index) +{ +#ifdef PCIDMA + struct comedi_subdevice *s = dev->subdevices + NI_GPCT_SUBDEV(counter_index); + + ni_tio_handle_interrupt(&devpriv->counter_dev->counters[counter_index], + s); + if (s->async->events) + ni_event(dev, s); +#endif +} + +static void ack_a_interrupt(struct comedi_device * dev, unsigned short a_status) +{ + unsigned short ack = 0; + + if (a_status & AI_SC_TC_St) { + ack |= AI_SC_TC_Interrupt_Ack; + } + if (a_status & AI_START1_St) { + ack |= AI_START1_Interrupt_Ack; + } + if (a_status & AI_START_St) { + ack |= AI_START_Interrupt_Ack; + } + if (a_status & AI_STOP_St) { + /* not sure why we used to ack the START here also, instead of doing it independently. Frank Hess 2007-07-06 */ + ack |= AI_STOP_Interrupt_Ack /*| AI_START_Interrupt_Ack */ ; + } + if (ack) + devpriv->stc_writew(dev, ack, Interrupt_A_Ack_Register); +} + +static void handle_a_interrupt(struct comedi_device * dev, unsigned short status, + unsigned ai_mite_status) +{ + struct comedi_subdevice *s = dev->subdevices + NI_AI_SUBDEV; + + //67xx boards don't have ai subdevice, but their gpct0 might generate an a interrupt + if (s->type == COMEDI_SUBD_UNUSED) + return; + +#ifdef DEBUG_INTERRUPT + rt_printk + ("ni_mio_common: interrupt: a_status=%04x ai_mite_status=%08x\n", + status, ai_mite_status); + ni_mio_print_status_a(status); +#endif +#ifdef PCIDMA + if (ai_mite_status & CHSR_LINKC) { + ni_sync_ai_dma(dev); + } + + if (ai_mite_status & ~(CHSR_INT | CHSR_LINKC | CHSR_DONE | CHSR_MRDY | + CHSR_DRDY | CHSR_DRQ1 | CHSR_DRQ0 | CHSR_ERROR | + CHSR_SABORT | CHSR_XFERR | CHSR_LxERR_mask)) { + rt_printk + ("unknown mite interrupt, ack! (ai_mite_status=%08x)\n", + ai_mite_status); + //mite_print_chsr(ai_mite_status); + s->async->events |= COMEDI_CB_ERROR | COMEDI_CB_EOA; + //disable_irq(dev->irq); + } +#endif + + /* test for all uncommon interrupt events at the same time */ + if (status & (AI_Overrun_St | AI_Overflow_St | AI_SC_TC_Error_St | + AI_SC_TC_St | AI_START1_St)) { + if (status == 0xffff) { + rt_printk + ("ni_mio_common: a_status=0xffff. Card removed?\n"); + /* we probably aren't even running a command now, + * so it's a good idea to be careful. */ + if (comedi_get_subdevice_runflags(s) & SRF_RUNNING) { + s->async->events |= + COMEDI_CB_ERROR | COMEDI_CB_EOA; + ni_event(dev, s); + } + return; + } + if (status & (AI_Overrun_St | AI_Overflow_St | + AI_SC_TC_Error_St)) { + rt_printk("ni_mio_common: ai error a_status=%04x\n", + status); + ni_mio_print_status_a(status); + + shutdown_ai_command(dev); + + s->async->events |= COMEDI_CB_ERROR; + if (status & (AI_Overrun_St | AI_Overflow_St)) + s->async->events |= COMEDI_CB_OVERFLOW; + + ni_event(dev, s); + + return; + } + if (status & AI_SC_TC_St) { +#ifdef DEBUG_INTERRUPT + rt_printk("ni_mio_common: SC_TC interrupt\n"); +#endif + if (!devpriv->ai_continuous) { + shutdown_ai_command(dev); + } + } + } +#ifndef PCIDMA + if (status & AI_FIFO_Half_Full_St) { + int i; + static const int timeout = 10; + /* pcmcia cards (at least 6036) seem to stop producing interrupts if we + *fail to get the fifo less than half full, so loop to be sure.*/ + for (i = 0; i < timeout; ++i) { + ni_handle_fifo_half_full(dev); + if ((devpriv->stc_readw(dev, + AI_Status_1_Register) & + AI_FIFO_Half_Full_St) == 0) + break; + } + } +#endif // !PCIDMA + + if ((status & AI_STOP_St)) { + ni_handle_eos(dev, s); + } + + ni_event(dev, s); + +#ifdef DEBUG_INTERRUPT + status = devpriv->stc_readw(dev, AI_Status_1_Register); + if (status & Interrupt_A_St) { + rt_printk + ("handle_a_interrupt: didn't clear interrupt? status=0x%x\n", + status); + } +#endif +} + +static void ack_b_interrupt(struct comedi_device * dev, unsigned short b_status) +{ + unsigned short ack = 0; + if (b_status & AO_BC_TC_St) { + ack |= AO_BC_TC_Interrupt_Ack; + } + if (b_status & AO_Overrun_St) { + ack |= AO_Error_Interrupt_Ack; + } + if (b_status & AO_START_St) { + ack |= AO_START_Interrupt_Ack; + } + if (b_status & AO_START1_St) { + ack |= AO_START1_Interrupt_Ack; + } + if (b_status & AO_UC_TC_St) { + ack |= AO_UC_TC_Interrupt_Ack; + } + if (b_status & AO_UI2_TC_St) { + ack |= AO_UI2_TC_Interrupt_Ack; + } + if (b_status & AO_UPDATE_St) { + ack |= AO_UPDATE_Interrupt_Ack; + } + if (ack) + devpriv->stc_writew(dev, ack, Interrupt_B_Ack_Register); +} + +static void handle_b_interrupt(struct comedi_device * dev, unsigned short b_status, + unsigned ao_mite_status) +{ + struct comedi_subdevice *s = dev->subdevices + NI_AO_SUBDEV; + //unsigned short ack=0; +#ifdef DEBUG_INTERRUPT + rt_printk("ni_mio_common: interrupt: b_status=%04x m1_status=%08x\n", + b_status, ao_mite_status); + ni_mio_print_status_b(b_status); +#endif + +#ifdef PCIDMA + /* Currently, mite.c requires us to handle LINKC */ + if (ao_mite_status & CHSR_LINKC) { + mite_handle_b_linkc(devpriv->mite, dev); + } + + if (ao_mite_status & ~(CHSR_INT | CHSR_LINKC | CHSR_DONE | CHSR_MRDY | + CHSR_DRDY | CHSR_DRQ1 | CHSR_DRQ0 | CHSR_ERROR | + CHSR_SABORT | CHSR_XFERR | CHSR_LxERR_mask)) { + rt_printk + ("unknown mite interrupt, ack! (ao_mite_status=%08x)\n", + ao_mite_status); + //mite_print_chsr(ao_mite_status); + s->async->events |= COMEDI_CB_EOA | COMEDI_CB_ERROR; + } +#endif + + if (b_status == 0xffff) + return; + if (b_status & AO_Overrun_St) { + rt_printk + ("ni_mio_common: AO FIFO underrun status=0x%04x status2=0x%04x\n", + b_status, devpriv->stc_readw(dev, + AO_Status_2_Register)); + s->async->events |= COMEDI_CB_OVERFLOW; + } + + if (b_status & AO_BC_TC_St) { + MDPRINTK("ni_mio_common: AO BC_TC status=0x%04x status2=0x%04x\n", b_status, devpriv->stc_readw(dev, AO_Status_2_Register)); + s->async->events |= COMEDI_CB_EOA; + } +#ifndef PCIDMA + if (b_status & AO_FIFO_Request_St) { + int ret; + + ret = ni_ao_fifo_half_empty(dev, s); + if (!ret) { + rt_printk("ni_mio_common: AO buffer underrun\n"); + ni_set_bits(dev, Interrupt_B_Enable_Register, + AO_FIFO_Interrupt_Enable | + AO_Error_Interrupt_Enable, 0); + s->async->events |= COMEDI_CB_OVERFLOW; + } + } +#endif + + ni_event(dev, s); +} + +#ifdef DEBUG_STATUS_A +static const char *const status_a_strings[] = { + "passthru0", "fifo", "G0_gate", "G0_TC", + "stop", "start", "sc_tc", "start1", + "start2", "sc_tc_error", "overflow", "overrun", + "fifo_empty", "fifo_half_full", "fifo_full", "interrupt_a" +}; + +static void ni_mio_print_status_a(int status) +{ + int i; + + rt_printk("A status:"); + for (i = 15; i >= 0; i--) { + if (status & (1 << i)) { + rt_printk(" %s", status_a_strings[i]); + } + } + rt_printk("\n"); +} +#endif + +#ifdef DEBUG_STATUS_B +static const char *const status_b_strings[] = { + "passthru1", "fifo", "G1_gate", "G1_TC", + "UI2_TC", "UPDATE", "UC_TC", "BC_TC", + "start1", "overrun", "start", "bc_tc_error", + "fifo_empty", "fifo_half_full", "fifo_full", "interrupt_b" +}; + +static void ni_mio_print_status_b(int status) +{ + int i; + + rt_printk("B status:"); + for (i = 15; i >= 0; i--) { + if (status & (1 << i)) { + rt_printk(" %s", status_b_strings[i]); + } + } + rt_printk("\n"); +} +#endif + +#ifndef PCIDMA + +static void ni_ao_fifo_load(struct comedi_device * dev, struct comedi_subdevice * s, int n) +{ + struct comedi_async *async = s->async; + struct comedi_cmd *cmd = &async->cmd; + int chan; + int i; + short d; + u32 packed_data; + int range; + int err = 1; + + chan = async->cur_chan; + for (i = 0; i < n; i++) { + err &= comedi_buf_get(async, &d); + if (err == 0) + break; + + range = CR_RANGE(cmd->chanlist[chan]); + + if (boardtype.reg_type & ni_reg_6xxx_mask) { + packed_data = d & 0xffff; + /* 6711 only has 16 bit wide ao fifo */ + if (boardtype.reg_type != ni_reg_6711) { + err &= comedi_buf_get(async, &d); + if (err == 0) + break; + chan++; + i++; + packed_data |= (d << 16) & 0xffff0000; + } + ni_writel(packed_data, DAC_FIFO_Data_611x); + } else { + ni_writew(d, DAC_FIFO_Data); + } + chan++; + chan %= cmd->chanlist_len; + } + async->cur_chan = chan; + if (err == 0) { + async->events |= COMEDI_CB_OVERFLOW; + } +} + +/* + * There's a small problem if the FIFO gets really low and we + * don't have the data to fill it. Basically, if after we fill + * the FIFO with all the data available, the FIFO is _still_ + * less than half full, we never clear the interrupt. If the + * IRQ is in edge mode, we never get another interrupt, because + * this one wasn't cleared. If in level mode, we get flooded + * with interrupts that we can't fulfill, because nothing ever + * gets put into the buffer. + * + * This kind of situation is recoverable, but it is easier to + * just pretend we had a FIFO underrun, since there is a good + * chance it will happen anyway. This is _not_ the case for + * RT code, as RT code might purposely be running close to the + * metal. Needs to be fixed eventually. + */ +static int ni_ao_fifo_half_empty(struct comedi_device * dev, struct comedi_subdevice * s) +{ + int n; + + n = comedi_buf_read_n_available(s->async); + if (n == 0) { + s->async->events |= COMEDI_CB_OVERFLOW; + return 0; + } + + n /= sizeof(short); + if (n > boardtype.ao_fifo_depth / 2) + n = boardtype.ao_fifo_depth / 2; + + ni_ao_fifo_load(dev, s, n); + + s->async->events |= COMEDI_CB_BLOCK; + + return 1; +} + +static int ni_ao_prep_fifo(struct comedi_device * dev, struct comedi_subdevice * s) +{ + int n; + + /* reset fifo */ + devpriv->stc_writew(dev, 1, DAC_FIFO_Clear); + if (boardtype.reg_type & ni_reg_6xxx_mask) + ni_ao_win_outl(dev, 0x6, AO_FIFO_Offset_Load_611x); + + /* load some data */ + n = comedi_buf_read_n_available(s->async); + if (n == 0) + return 0; + + n /= sizeof(short); + if (n > boardtype.ao_fifo_depth) + n = boardtype.ao_fifo_depth; + + ni_ao_fifo_load(dev, s, n); + + return n; +} + +static void ni_ai_fifo_read(struct comedi_device * dev, struct comedi_subdevice * s, int n) +{ + struct comedi_async *async = s->async; + int i; + + if (boardtype.reg_type == ni_reg_611x) { + short data[2]; + u32 dl; + + for (i = 0; i < n / 2; i++) { + dl = ni_readl(ADC_FIFO_Data_611x); + /* This may get the hi/lo data in the wrong order */ + data[0] = (dl >> 16) & 0xffff; + data[1] = dl & 0xffff; + cfc_write_array_to_buffer(s, data, sizeof(data)); + } + /* Check if there's a single sample stuck in the FIFO */ + if (n % 2) { + dl = ni_readl(ADC_FIFO_Data_611x); + data[0] = dl & 0xffff; + cfc_write_to_buffer(s, data[0]); + } + } else if (boardtype.reg_type == ni_reg_6143) { + short data[2]; + u32 dl; + + // This just reads the FIFO assuming the data is present, no checks on the FIFO status are performed + for (i = 0; i < n / 2; i++) { + dl = ni_readl(AIFIFO_Data_6143); + + data[0] = (dl >> 16) & 0xffff; + data[1] = dl & 0xffff; + cfc_write_array_to_buffer(s, data, sizeof(data)); + } + if (n % 2) { + /* Assume there is a single sample stuck in the FIFO */ + ni_writel(0x01, AIFIFO_Control_6143); // Get stranded sample into FIFO + dl = ni_readl(AIFIFO_Data_6143); + data[0] = (dl >> 16) & 0xffff; + cfc_write_to_buffer(s, data[0]); + } + } else { + if (n > sizeof(devpriv->ai_fifo_buffer) / + sizeof(devpriv->ai_fifo_buffer[0])) { + comedi_error(dev, "bug! ai_fifo_buffer too small"); + async->events |= COMEDI_CB_ERROR; + return; + } + for (i = 0; i < n; i++) { + devpriv->ai_fifo_buffer[i] = + ni_readw(ADC_FIFO_Data_Register); + } + cfc_write_array_to_buffer(s, devpriv->ai_fifo_buffer, + n * sizeof(devpriv->ai_fifo_buffer[0])); + } +} + +static void ni_handle_fifo_half_full(struct comedi_device * dev) +{ + int n; + struct comedi_subdevice *s = dev->subdevices + NI_AI_SUBDEV; + + n = boardtype.ai_fifo_depth / 2; + + ni_ai_fifo_read(dev, s, n); +} +#endif + +#ifdef PCIDMA +static int ni_ai_drain_dma(struct comedi_device * dev) +{ + int i; + static const int timeout = 10000; + unsigned long flags; + int retval = 0; + + comedi_spin_lock_irqsave(&devpriv->mite_channel_lock, flags); + if (devpriv->ai_mite_chan) { + for (i = 0; i < timeout; i++) { + if ((devpriv->stc_readw(dev, + AI_Status_1_Register) & + AI_FIFO_Empty_St) + && mite_bytes_in_transit(devpriv-> + ai_mite_chan) == 0) + break; + comedi_udelay(5); + } + if (i == timeout) { + rt_printk + ("ni_mio_common: wait for dma drain timed out\n"); + rt_printk + ("mite_bytes_in_transit=%i, AI_Status1_Register=0x%x\n", + mite_bytes_in_transit(devpriv->ai_mite_chan), + devpriv->stc_readw(dev, AI_Status_1_Register)); + retval = -1; + } + } + comedi_spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags); + + ni_sync_ai_dma(dev); + + return retval; +} +#endif +/* + Empties the AI fifo +*/ +static void ni_handle_fifo_dregs(struct comedi_device * dev) +{ + struct comedi_subdevice *s = dev->subdevices + NI_AI_SUBDEV; + short data[2]; + u32 dl; + short fifo_empty; + int i; + + if (boardtype.reg_type == ni_reg_611x) { + while ((devpriv->stc_readw(dev, + AI_Status_1_Register) & + AI_FIFO_Empty_St) == 0) { + dl = ni_readl(ADC_FIFO_Data_611x); + + /* This may get the hi/lo data in the wrong order */ + data[0] = (dl >> 16); + data[1] = (dl & 0xffff); + cfc_write_array_to_buffer(s, data, sizeof(data)); + } + } else if (boardtype.reg_type == ni_reg_6143) { + i = 0; + while (ni_readl(AIFIFO_Status_6143) & 0x04) { + dl = ni_readl(AIFIFO_Data_6143); + + /* This may get the hi/lo data in the wrong order */ + data[0] = (dl >> 16); + data[1] = (dl & 0xffff); + cfc_write_array_to_buffer(s, data, sizeof(data)); + i += 2; + } + // Check if stranded sample is present + if (ni_readl(AIFIFO_Status_6143) & 0x01) { + ni_writel(0x01, AIFIFO_Control_6143); // Get stranded sample into FIFO + dl = ni_readl(AIFIFO_Data_6143); + data[0] = (dl >> 16) & 0xffff; + cfc_write_to_buffer(s, data[0]); + } + + } else { + fifo_empty = + devpriv->stc_readw(dev, + AI_Status_1_Register) & AI_FIFO_Empty_St; + while (fifo_empty == 0) { + for (i = 0; + i < + sizeof(devpriv->ai_fifo_buffer) / + sizeof(devpriv->ai_fifo_buffer[0]); i++) { + fifo_empty = + devpriv->stc_readw(dev, + AI_Status_1_Register) & + AI_FIFO_Empty_St; + if (fifo_empty) + break; + devpriv->ai_fifo_buffer[i] = + ni_readw(ADC_FIFO_Data_Register); + } + cfc_write_array_to_buffer(s, devpriv->ai_fifo_buffer, + i * sizeof(devpriv->ai_fifo_buffer[0])); + } + } +} + +static void get_last_sample_611x(struct comedi_device * dev) +{ + struct comedi_subdevice *s = dev->subdevices + NI_AI_SUBDEV; + short data; + u32 dl; + + if (boardtype.reg_type != ni_reg_611x) + return; + + /* Check if there's a single sample stuck in the FIFO */ + if (ni_readb(XXX_Status) & 0x80) { + dl = ni_readl(ADC_FIFO_Data_611x); + data = (dl & 0xffff); + cfc_write_to_buffer(s, data); + } +} + +static void get_last_sample_6143(struct comedi_device * dev) +{ + struct comedi_subdevice *s = dev->subdevices + NI_AI_SUBDEV; + short data; + u32 dl; + + if (boardtype.reg_type != ni_reg_6143) + return; + + /* Check if there's a single sample stuck in the FIFO */ + if (ni_readl(AIFIFO_Status_6143) & 0x01) { + ni_writel(0x01, AIFIFO_Control_6143); // Get stranded sample into FIFO + dl = ni_readl(AIFIFO_Data_6143); + + /* This may get the hi/lo data in the wrong order */ + data = (dl >> 16) & 0xffff; + cfc_write_to_buffer(s, data); + } +} + +static void ni_ai_munge(struct comedi_device * dev, struct comedi_subdevice * s, + void *data, unsigned int num_bytes, unsigned int chan_index) +{ + struct comedi_async *async = s->async; + unsigned int i; + unsigned int length = num_bytes / bytes_per_sample(s); + short *array = data; + unsigned int *larray = data; + for (i = 0; i < length; i++) { +#ifdef PCIDMA + if (s->subdev_flags & SDF_LSAMPL) + larray[i] = le32_to_cpu(larray[i]); + else + array[i] = le16_to_cpu(array[i]); +#endif + if (s->subdev_flags & SDF_LSAMPL) + larray[i] += devpriv->ai_offset[chan_index]; + else + array[i] += devpriv->ai_offset[chan_index]; + chan_index++; + chan_index %= async->cmd.chanlist_len; + } +} + +#ifdef PCIDMA + +static int ni_ai_setup_MITE_dma(struct comedi_device * dev) +{ + struct comedi_subdevice *s = dev->subdevices + NI_AI_SUBDEV; + int retval; + unsigned long flags; + + retval = ni_request_ai_mite_channel(dev); + if (retval) + return retval; +// rt_printk("comedi_debug: using mite channel %i for ai.\n", devpriv->ai_mite_chan->channel); + + /* write alloc the entire buffer */ + comedi_buf_write_alloc(s->async, s->async->prealloc_bufsz); + + comedi_spin_lock_irqsave(&devpriv->mite_channel_lock, flags); + if(devpriv->ai_mite_chan == NULL) + { + comedi_spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags); + return -EIO; + } + + switch (boardtype.reg_type) { + case ni_reg_611x: + case ni_reg_6143: + mite_prep_dma(devpriv->ai_mite_chan, 32, 16); + break; + case ni_reg_628x: + mite_prep_dma(devpriv->ai_mite_chan, 32, 32); + break; + default: + mite_prep_dma(devpriv->ai_mite_chan, 16, 16); + break; + }; + /*start the MITE */ + mite_dma_arm(devpriv->ai_mite_chan); + comedi_spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags); + + return 0; +} + +static int ni_ao_setup_MITE_dma(struct comedi_device * dev) +{ + struct comedi_subdevice *s = dev->subdevices + NI_AO_SUBDEV; + int retval; + unsigned long flags; + + retval = ni_request_ao_mite_channel(dev); + if (retval) + return retval; + + /* read alloc the entire buffer */ + comedi_buf_read_alloc(s->async, s->async->prealloc_bufsz); + + comedi_spin_lock_irqsave(&devpriv->mite_channel_lock, flags); + if (devpriv->ao_mite_chan) { + if (boardtype.reg_type & (ni_reg_611x | ni_reg_6713)) { + mite_prep_dma(devpriv->ao_mite_chan, 32, 32); + } else { + /* doing 32 instead of 16 bit wide transfers from memory + makes the mite do 32 bit pci transfers, doubling pci bandwidth. */ + mite_prep_dma(devpriv->ao_mite_chan, 16, 32); + } + mite_dma_arm(devpriv->ao_mite_chan); + } else + retval = -EIO; + comedi_spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags); + + return retval; +} + +#endif // PCIDMA + +/* + used for both cancel ioctl and board initialization + + this is pretty harsh for a cancel, but it works... + */ + +static int ni_ai_reset(struct comedi_device * dev, struct comedi_subdevice * s) +{ + ni_release_ai_mite_channel(dev); + /* ai configuration */ + devpriv->stc_writew(dev, AI_Configuration_Start | AI_Reset, + Joint_Reset_Register); + + ni_set_bits(dev, Interrupt_A_Enable_Register, + AI_SC_TC_Interrupt_Enable | AI_START1_Interrupt_Enable | + AI_START2_Interrupt_Enable | AI_START_Interrupt_Enable | + AI_STOP_Interrupt_Enable | AI_Error_Interrupt_Enable | + AI_FIFO_Interrupt_Enable, 0); + + ni_clear_ai_fifo(dev); + + if (boardtype.reg_type != ni_reg_6143) + ni_writeb(0, Misc_Command); + + devpriv->stc_writew(dev, AI_Disarm, AI_Command_1_Register); /* reset pulses */ + devpriv->stc_writew(dev, + AI_Start_Stop | AI_Mode_1_Reserved /*| AI_Trigger_Once */ , + AI_Mode_1_Register); + devpriv->stc_writew(dev, 0x0000, AI_Mode_2_Register); + /* generate FIFO interrupts on non-empty */ + devpriv->stc_writew(dev, (0 << 6) | 0x0000, AI_Mode_3_Register); + if (boardtype.reg_type == ni_reg_611x) { + devpriv->stc_writew(dev, AI_SHIFTIN_Pulse_Width | + AI_SOC_Polarity | + AI_LOCALMUX_CLK_Pulse_Width, AI_Personal_Register); + devpriv->stc_writew(dev, AI_SCAN_IN_PROG_Output_Select(3) | + AI_EXTMUX_CLK_Output_Select(0) | + AI_LOCALMUX_CLK_Output_Select(2) | + AI_SC_TC_Output_Select(3) | + AI_CONVERT_Output_Select(AI_CONVERT_Output_Enable_High), + AI_Output_Control_Register); + } else if (boardtype.reg_type == ni_reg_6143) { + devpriv->stc_writew(dev, AI_SHIFTIN_Pulse_Width | + AI_SOC_Polarity | + AI_LOCALMUX_CLK_Pulse_Width, AI_Personal_Register); + devpriv->stc_writew(dev, AI_SCAN_IN_PROG_Output_Select(3) | + AI_EXTMUX_CLK_Output_Select(0) | + AI_LOCALMUX_CLK_Output_Select(2) | + AI_SC_TC_Output_Select(3) | + AI_CONVERT_Output_Select(AI_CONVERT_Output_Enable_Low), + AI_Output_Control_Register); + } else { + unsigned ai_output_control_bits; + devpriv->stc_writew(dev, AI_SHIFTIN_Pulse_Width | + AI_SOC_Polarity | + AI_CONVERT_Pulse_Width | + AI_LOCALMUX_CLK_Pulse_Width, AI_Personal_Register); + ai_output_control_bits = AI_SCAN_IN_PROG_Output_Select(3) | + AI_EXTMUX_CLK_Output_Select(0) | + AI_LOCALMUX_CLK_Output_Select(2) | + AI_SC_TC_Output_Select(3); + if (boardtype.reg_type == ni_reg_622x) + ai_output_control_bits |= + AI_CONVERT_Output_Select + (AI_CONVERT_Output_Enable_High); + else + ai_output_control_bits |= + AI_CONVERT_Output_Select + (AI_CONVERT_Output_Enable_Low); + devpriv->stc_writew(dev, ai_output_control_bits, + AI_Output_Control_Register); + } + /* the following registers should not be changed, because there + * are no backup registers in devpriv. If you want to change + * any of these, add a backup register and other appropriate code: + * AI_Mode_1_Register + * AI_Mode_3_Register + * AI_Personal_Register + * AI_Output_Control_Register + */ + devpriv->stc_writew(dev, AI_SC_TC_Error_Confirm | AI_START_Interrupt_Ack | AI_START2_Interrupt_Ack | AI_START1_Interrupt_Ack | AI_SC_TC_Interrupt_Ack | AI_Error_Interrupt_Ack | AI_STOP_Interrupt_Ack, Interrupt_A_Ack_Register); /* clear interrupts */ + + devpriv->stc_writew(dev, AI_Configuration_End, Joint_Reset_Register); + + return 0; +} + +static int ni_ai_poll(struct comedi_device * dev, struct comedi_subdevice * s) +{ + unsigned long flags = 0; + int count; + + // lock to avoid race with interrupt handler + if (in_interrupt() == 0) + comedi_spin_lock_irqsave(&dev->spinlock, flags); +#ifndef PCIDMA + ni_handle_fifo_dregs(dev); +#else + ni_sync_ai_dma(dev); +#endif + count = s->async->buf_write_count - s->async->buf_read_count; + if (in_interrupt() == 0) + comedi_spin_unlock_irqrestore(&dev->spinlock, flags); + + return count; +} + +static int ni_ai_insn_read(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + int i, n; + const unsigned int mask = (1 << boardtype.adbits) - 1; + unsigned signbits; + unsigned short d; + unsigned long dl; + + ni_load_channelgain_list(dev, 1, &insn->chanspec); + + ni_clear_ai_fifo(dev); + + signbits = devpriv->ai_offset[0]; + if (boardtype.reg_type == ni_reg_611x) { + for (n = 0; n < num_adc_stages_611x; n++) { + devpriv->stc_writew(dev, AI_CONVERT_Pulse, + AI_Command_1_Register); + comedi_udelay(1); + } + for (n = 0; n < insn->n; n++) { + devpriv->stc_writew(dev, AI_CONVERT_Pulse, + AI_Command_1_Register); + /* The 611x has screwy 32-bit FIFOs. */ + d = 0; + for (i = 0; i < NI_TIMEOUT; i++) { + if (ni_readb(XXX_Status) & 0x80) { + d = (ni_readl(ADC_FIFO_Data_611x) >> 16) + & 0xffff; + break; + } + if (!(devpriv->stc_readw(dev, + AI_Status_1_Register) & + AI_FIFO_Empty_St)) { + d = ni_readl(ADC_FIFO_Data_611x) & + 0xffff; + break; + } + } + if (i == NI_TIMEOUT) { + rt_printk + ("ni_mio_common: timeout in 611x ni_ai_insn_read\n"); + return -ETIME; + } + d += signbits; + data[n] = d; + } + } else if (boardtype.reg_type == ni_reg_6143) { + for (n = 0; n < insn->n; n++) { + devpriv->stc_writew(dev, AI_CONVERT_Pulse, + AI_Command_1_Register); + + /* The 6143 has 32-bit FIFOs. You need to strobe a bit to move a single 16bit stranded sample into the FIFO */ + dl = 0; + for (i = 0; i < NI_TIMEOUT; i++) { + if (ni_readl(AIFIFO_Status_6143) & 0x01) { + ni_writel(0x01, AIFIFO_Control_6143); // Get stranded sample into FIFO + dl = ni_readl(AIFIFO_Data_6143); + break; + } + } + if (i == NI_TIMEOUT) { + rt_printk + ("ni_mio_common: timeout in 6143 ni_ai_insn_read\n"); + return -ETIME; + } + data[n] = (((dl >> 16) & 0xFFFF) + signbits) & 0xFFFF; + } + } else { + for (n = 0; n < insn->n; n++) { + devpriv->stc_writew(dev, AI_CONVERT_Pulse, + AI_Command_1_Register); + for (i = 0; i < NI_TIMEOUT; i++) { + if (!(devpriv->stc_readw(dev, + AI_Status_1_Register) & + AI_FIFO_Empty_St)) + break; + } + if (i == NI_TIMEOUT) { + rt_printk + ("ni_mio_common: timeout in ni_ai_insn_read\n"); + return -ETIME; + } + if (boardtype.reg_type & ni_reg_m_series_mask) { + data[n] = + ni_readl(M_Offset_AI_FIFO_Data) & mask; + } else { + d = ni_readw(ADC_FIFO_Data_Register); + d += signbits; /* subtle: needs to be short addition */ + data[n] = d; + } + } + } + return insn->n; +} + +void ni_prime_channelgain_list(struct comedi_device * dev) +{ + int i; + devpriv->stc_writew(dev, AI_CONVERT_Pulse, AI_Command_1_Register); + for (i = 0; i < NI_TIMEOUT; ++i) { + if (!(devpriv->stc_readw(dev, + AI_Status_1_Register) & + AI_FIFO_Empty_St)) { + devpriv->stc_writew(dev, 1, ADC_FIFO_Clear); + return; + } + comedi_udelay(1); + } + rt_printk("ni_mio_common: timeout loading channel/gain list\n"); +} + +static void ni_m_series_load_channelgain_list(struct comedi_device * dev, + unsigned int n_chan, unsigned int *list) +{ + unsigned int chan, range, aref; + unsigned int i; + unsigned offset; + unsigned int dither; + unsigned range_code; + + devpriv->stc_writew(dev, 1, Configuration_Memory_Clear); + +// offset = 1 << (boardtype.adbits - 1); + if ((list[0] & CR_ALT_SOURCE)) { + unsigned bypass_bits; + chan = CR_CHAN(list[0]); + range = CR_RANGE(list[0]); + range_code = ni_gainlkup[boardtype.gainlkup][range]; + dither = ((list[0] & CR_ALT_FILTER) != 0); + bypass_bits = MSeries_AI_Bypass_Config_FIFO_Bit; + bypass_bits |= chan; + bypass_bits |= + (devpriv-> + ai_calib_source) & (MSeries_AI_Bypass_Cal_Sel_Pos_Mask | + MSeries_AI_Bypass_Cal_Sel_Neg_Mask | + MSeries_AI_Bypass_Mode_Mux_Mask | + MSeries_AO_Bypass_AO_Cal_Sel_Mask); + bypass_bits |= MSeries_AI_Bypass_Gain_Bits(range_code); + if (dither) + bypass_bits |= MSeries_AI_Bypass_Dither_Bit; + // don't use 2's complement encoding + bypass_bits |= MSeries_AI_Bypass_Polarity_Bit; + ni_writel(bypass_bits, M_Offset_AI_Config_FIFO_Bypass); + } else { + ni_writel(0, M_Offset_AI_Config_FIFO_Bypass); + } + offset = 0; + for (i = 0; i < n_chan; i++) { + unsigned config_bits = 0; + chan = CR_CHAN(list[i]); + aref = CR_AREF(list[i]); + range = CR_RANGE(list[i]); + dither = ((list[i] & CR_ALT_FILTER) != 0); + + range_code = ni_gainlkup[boardtype.gainlkup][range]; + devpriv->ai_offset[i] = offset; + switch (aref) { + case AREF_DIFF: + config_bits |= + MSeries_AI_Config_Channel_Type_Differential_Bits; + break; + case AREF_COMMON: + config_bits |= + MSeries_AI_Config_Channel_Type_Common_Ref_Bits; + break; + case AREF_GROUND: + config_bits |= + MSeries_AI_Config_Channel_Type_Ground_Ref_Bits; + break; + case AREF_OTHER: + break; + } + config_bits |= MSeries_AI_Config_Channel_Bits(chan); + config_bits |= + MSeries_AI_Config_Bank_Bits(boardtype.reg_type, chan); + config_bits |= MSeries_AI_Config_Gain_Bits(range_code); + if (i == n_chan - 1) + config_bits |= MSeries_AI_Config_Last_Channel_Bit; + if (dither) + config_bits |= MSeries_AI_Config_Dither_Bit; + // don't use 2's complement encoding + config_bits |= MSeries_AI_Config_Polarity_Bit; + ni_writew(config_bits, M_Offset_AI_Config_FIFO_Data); + } + ni_prime_channelgain_list(dev); +} + +/* + * Notes on the 6110 and 6111: + * These boards a slightly different than the rest of the series, since + * they have multiple A/D converters. + * From the driver side, the configuration memory is a + * little different. + * Configuration Memory Low: + * bits 15-9: same + * bit 8: unipolar/bipolar (should be 0 for bipolar) + * bits 0-3: gain. This is 4 bits instead of 3 for the other boards + * 1001 gain=0.1 (+/- 50) + * 1010 0.2 + * 1011 0.1 + * 0001 1 + * 0010 2 + * 0011 5 + * 0100 10 + * 0101 20 + * 0110 50 + * Configuration Memory High: + * bits 12-14: Channel Type + * 001 for differential + * 000 for calibration + * bit 11: coupling (this is not currently handled) + * 1 AC coupling + * 0 DC coupling + * bits 0-2: channel + * valid channels are 0-3 + */ +static void ni_load_channelgain_list(struct comedi_device * dev, unsigned int n_chan, + unsigned int *list) +{ + unsigned int chan, range, aref; + unsigned int i; + unsigned int hi, lo; + unsigned offset; + unsigned int dither; + + if (boardtype.reg_type & ni_reg_m_series_mask) { + ni_m_series_load_channelgain_list(dev, n_chan, list); + return; + } + if (n_chan == 1 && (boardtype.reg_type != ni_reg_611x) + && (boardtype.reg_type != ni_reg_6143)) { + if (devpriv->changain_state + && devpriv->changain_spec == list[0]) { + // ready to go. + return; + } + devpriv->changain_state = 1; + devpriv->changain_spec = list[0]; + } else { + devpriv->changain_state = 0; + } + + devpriv->stc_writew(dev, 1, Configuration_Memory_Clear); + + // Set up Calibration mode if required + if (boardtype.reg_type == ni_reg_6143) { + if ((list[0] & CR_ALT_SOURCE) + && !devpriv->ai_calib_source_enabled) { + // Strobe Relay enable bit + ni_writew(devpriv-> + ai_calib_source | + Calibration_Channel_6143_RelayOn, + Calibration_Channel_6143); + ni_writew(devpriv->ai_calib_source, + Calibration_Channel_6143); + devpriv->ai_calib_source_enabled = 1; + msleep_interruptible(100); // Allow relays to change + } else if (!(list[0] & CR_ALT_SOURCE) + && devpriv->ai_calib_source_enabled) { + // Strobe Relay disable bit + ni_writew(devpriv-> + ai_calib_source | + Calibration_Channel_6143_RelayOff, + Calibration_Channel_6143); + ni_writew(devpriv->ai_calib_source, + Calibration_Channel_6143); + devpriv->ai_calib_source_enabled = 0; + msleep_interruptible(100); // Allow relays to change + } + } + + offset = 1 << (boardtype.adbits - 1); + for (i = 0; i < n_chan; i++) { + if ((boardtype.reg_type != ni_reg_6143) + && (list[i] & CR_ALT_SOURCE)) { + chan = devpriv->ai_calib_source; + } else { + chan = CR_CHAN(list[i]); + } + aref = CR_AREF(list[i]); + range = CR_RANGE(list[i]); + dither = ((list[i] & CR_ALT_FILTER) != 0); + + /* fix the external/internal range differences */ + range = ni_gainlkup[boardtype.gainlkup][range]; + if (boardtype.reg_type == ni_reg_611x) + devpriv->ai_offset[i] = offset; + else + devpriv->ai_offset[i] = (range & 0x100) ? 0 : offset; + + hi = 0; + if ((list[i] & CR_ALT_SOURCE)) { + if (boardtype.reg_type == ni_reg_611x) + ni_writew(CR_CHAN(list[i]) & 0x0003, + Calibration_Channel_Select_611x); + } else { + if (boardtype.reg_type == ni_reg_611x) + aref = AREF_DIFF; + else if (boardtype.reg_type == ni_reg_6143) + aref = AREF_OTHER; + switch (aref) { + case AREF_DIFF: + hi |= AI_DIFFERENTIAL; + break; + case AREF_COMMON: + hi |= AI_COMMON; + break; + case AREF_GROUND: + hi |= AI_GROUND; + break; + case AREF_OTHER: + break; + } + } + hi |= AI_CONFIG_CHANNEL(chan); + + ni_writew(hi, Configuration_Memory_High); + + if (boardtype.reg_type != ni_reg_6143) { + lo = range; + if (i == n_chan - 1) + lo |= AI_LAST_CHANNEL; + if (dither) + lo |= AI_DITHER; + + ni_writew(lo, Configuration_Memory_Low); + } + } + + /* prime the channel/gain list */ + if ((boardtype.reg_type != ni_reg_611x) + && (boardtype.reg_type != ni_reg_6143)) { + ni_prime_channelgain_list(dev); + } +} + +static int ni_ns_to_timer(const struct comedi_device * dev, unsigned nanosec, + int round_mode) +{ + int divider; + switch (round_mode) { + case TRIG_ROUND_NEAREST: + default: + divider = (nanosec + devpriv->clock_ns / 2) / devpriv->clock_ns; + break; + case TRIG_ROUND_DOWN: + divider = (nanosec) / devpriv->clock_ns; + break; + case TRIG_ROUND_UP: + divider = (nanosec + devpriv->clock_ns - 1) / devpriv->clock_ns; + break; + } + return divider - 1; +} + +static unsigned ni_timer_to_ns(const struct comedi_device * dev, int timer) +{ + return devpriv->clock_ns * (timer + 1); +} + +static unsigned ni_min_ai_scan_period_ns(struct comedi_device * dev, + unsigned num_channels) +{ + switch (boardtype.reg_type) { + case ni_reg_611x: + case ni_reg_6143: + // simultaneously-sampled inputs + return boardtype.ai_speed; + break; + default: + // multiplexed inputs + break; + }; + return boardtype.ai_speed * num_channels; +} + +static int ni_ai_cmdtest(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_cmd * cmd) +{ + int err = 0; + int tmp; + int sources; + + /* step 1: make sure trigger sources are trivially valid */ + + if ((cmd->flags & CMDF_WRITE)) { + cmd->flags &= ~CMDF_WRITE; + } + + tmp = cmd->start_src; + cmd->start_src &= TRIG_NOW | TRIG_INT | TRIG_EXT; + if (!cmd->start_src || tmp != cmd->start_src) + err++; + + tmp = cmd->scan_begin_src; + cmd->scan_begin_src &= TRIG_TIMER | TRIG_EXT; + if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src) + err++; + + tmp = cmd->convert_src; + sources = TRIG_TIMER | TRIG_EXT; + if ((boardtype.reg_type == ni_reg_611x) + || (boardtype.reg_type == ni_reg_6143)) + sources |= TRIG_NOW; + cmd->convert_src &= sources; + if (!cmd->convert_src || tmp != cmd->convert_src) + err++; + + tmp = cmd->scan_end_src; + cmd->scan_end_src &= TRIG_COUNT; + if (!cmd->scan_end_src || tmp != cmd->scan_end_src) + err++; + + tmp = cmd->stop_src; + cmd->stop_src &= TRIG_COUNT | TRIG_NONE; + if (!cmd->stop_src || tmp != cmd->stop_src) + err++; + + if (err) + return 1; + + /* step 2: make sure trigger sources are unique and mutually compatible */ + + /* note that mutual compatiblity is not an issue here */ + if (cmd->start_src != TRIG_NOW && + cmd->start_src != TRIG_INT && cmd->start_src != TRIG_EXT) + err++; + if (cmd->scan_begin_src != TRIG_TIMER && + cmd->scan_begin_src != TRIG_EXT && + cmd->scan_begin_src != TRIG_OTHER) + err++; + if (cmd->convert_src != TRIG_TIMER && + cmd->convert_src != TRIG_EXT && cmd->convert_src != TRIG_NOW) + err++; + if (cmd->stop_src != TRIG_COUNT && cmd->stop_src != TRIG_NONE) + err++; + + if (err) + return 2; + + /* step 3: make sure arguments are trivially compatible */ + + if (cmd->start_src == TRIG_EXT) { + /* external trigger */ + unsigned int tmp = CR_CHAN(cmd->start_arg); + + if (tmp > 16) + tmp = 16; + tmp |= (cmd->start_arg & (CR_INVERT | CR_EDGE)); + if (cmd->start_arg != tmp) { + cmd->start_arg = tmp; + err++; + } + } else { + if (cmd->start_arg != 0) { + /* true for both TRIG_NOW and TRIG_INT */ + cmd->start_arg = 0; + err++; + } + } + if (cmd->scan_begin_src == TRIG_TIMER) { + if (cmd->scan_begin_arg < ni_min_ai_scan_period_ns(dev, + cmd->chanlist_len)) { + cmd->scan_begin_arg = + ni_min_ai_scan_period_ns(dev, + cmd->chanlist_len); + err++; + } + if (cmd->scan_begin_arg > devpriv->clock_ns * 0xffffff) { + cmd->scan_begin_arg = devpriv->clock_ns * 0xffffff; + err++; + } + } else if (cmd->scan_begin_src == TRIG_EXT) { + /* external trigger */ + unsigned int tmp = CR_CHAN(cmd->scan_begin_arg); + + if (tmp > 16) + tmp = 16; + tmp |= (cmd->scan_begin_arg & (CR_INVERT | CR_EDGE)); + if (cmd->scan_begin_arg != tmp) { + cmd->scan_begin_arg = tmp; + err++; + } + } else { /* TRIG_OTHER */ + if (cmd->scan_begin_arg) { + cmd->scan_begin_arg = 0; + err++; + } + } + if (cmd->convert_src == TRIG_TIMER) { + if ((boardtype.reg_type == ni_reg_611x) + || (boardtype.reg_type == ni_reg_6143)) { + if (cmd->convert_arg != 0) { + cmd->convert_arg = 0; + err++; + } + } else { + if (cmd->convert_arg < boardtype.ai_speed) { + cmd->convert_arg = boardtype.ai_speed; + err++; + } + if (cmd->convert_arg > devpriv->clock_ns * 0xffff) { + cmd->convert_arg = devpriv->clock_ns * 0xffff; + err++; + } + } + } else if (cmd->convert_src == TRIG_EXT) { + /* external trigger */ + unsigned int tmp = CR_CHAN(cmd->convert_arg); + + if (tmp > 16) + tmp = 16; + tmp |= (cmd->convert_arg & (CR_ALT_FILTER | CR_INVERT)); + if (cmd->convert_arg != tmp) { + cmd->convert_arg = tmp; + err++; + } + } else if (cmd->convert_src == TRIG_NOW) { + if (cmd->convert_arg != 0) { + cmd->convert_arg = 0; + err++; + } + } + + if (cmd->scan_end_arg != cmd->chanlist_len) { + cmd->scan_end_arg = cmd->chanlist_len; + err++; + } + if (cmd->stop_src == TRIG_COUNT) { + unsigned int max_count = 0x01000000; + + if (boardtype.reg_type == ni_reg_611x) + max_count -= num_adc_stages_611x; + if (cmd->stop_arg > max_count) { + cmd->stop_arg = max_count; + err++; + } + if (cmd->stop_arg < 1) { + cmd->stop_arg = 1; + err++; + } + } else { + /* TRIG_NONE */ + if (cmd->stop_arg != 0) { + cmd->stop_arg = 0; + err++; + } + } + + if (err) + return 3; + + /* step 4: fix up any arguments */ + + if (cmd->scan_begin_src == TRIG_TIMER) { + tmp = cmd->scan_begin_arg; + cmd->scan_begin_arg = + ni_timer_to_ns(dev, ni_ns_to_timer(dev, + cmd->scan_begin_arg, + cmd->flags & TRIG_ROUND_MASK)); + if (tmp != cmd->scan_begin_arg) + err++; + } + if (cmd->convert_src == TRIG_TIMER) { + if ((boardtype.reg_type != ni_reg_611x) + && (boardtype.reg_type != ni_reg_6143)) { + tmp = cmd->convert_arg; + cmd->convert_arg = + ni_timer_to_ns(dev, ni_ns_to_timer(dev, + cmd->convert_arg, + cmd->flags & TRIG_ROUND_MASK)); + if (tmp != cmd->convert_arg) + err++; + if (cmd->scan_begin_src == TRIG_TIMER && + cmd->scan_begin_arg < + cmd->convert_arg * cmd->scan_end_arg) { + cmd->scan_begin_arg = + cmd->convert_arg * cmd->scan_end_arg; + err++; + } + } + } + + if (err) + return 4; + + return 0; +} + +static int ni_ai_cmd(struct comedi_device * dev, struct comedi_subdevice * s) +{ + const struct comedi_cmd *cmd = &s->async->cmd; + int timer; + int mode1 = 0; /* mode1 is needed for both stop and convert */ + int mode2 = 0; + int start_stop_select = 0; + unsigned int stop_count; + int interrupt_a_enable = 0; + + MDPRINTK("ni_ai_cmd\n"); + if (dev->irq == 0) { + comedi_error(dev, "cannot run command without an irq"); + return -EIO; + } + ni_clear_ai_fifo(dev); + + ni_load_channelgain_list(dev, cmd->chanlist_len, cmd->chanlist); + + /* start configuration */ + devpriv->stc_writew(dev, AI_Configuration_Start, Joint_Reset_Register); + + /* disable analog triggering for now, since it + * interferes with the use of pfi0 */ + devpriv->an_trig_etc_reg &= ~Analog_Trigger_Enable; + devpriv->stc_writew(dev, devpriv->an_trig_etc_reg, + Analog_Trigger_Etc_Register); + + switch (cmd->start_src) { + case TRIG_INT: + case TRIG_NOW: + devpriv->stc_writew(dev, AI_START2_Select(0) | + AI_START1_Sync | AI_START1_Edge | AI_START1_Select(0), + AI_Trigger_Select_Register); + break; + case TRIG_EXT: + { + int chan = CR_CHAN(cmd->start_arg); + unsigned int bits = AI_START2_Select(0) | + AI_START1_Sync | AI_START1_Select(chan + 1); + + if (cmd->start_arg & CR_INVERT) + bits |= AI_START1_Polarity; + if (cmd->start_arg & CR_EDGE) + bits |= AI_START1_Edge; + devpriv->stc_writew(dev, bits, + AI_Trigger_Select_Register); + break; + } + } + + mode2 &= ~AI_Pre_Trigger; + mode2 &= ~AI_SC_Initial_Load_Source; + mode2 &= ~AI_SC_Reload_Mode; + devpriv->stc_writew(dev, mode2, AI_Mode_2_Register); + + if (cmd->chanlist_len == 1 || (boardtype.reg_type == ni_reg_611x) + || (boardtype.reg_type == ni_reg_6143)) { + start_stop_select |= AI_STOP_Polarity; + start_stop_select |= AI_STOP_Select(31); // logic low + start_stop_select |= AI_STOP_Sync; + } else { + start_stop_select |= AI_STOP_Select(19); // ai configuration memory + } + devpriv->stc_writew(dev, start_stop_select, + AI_START_STOP_Select_Register); + + devpriv->ai_cmd2 = 0; + switch (cmd->stop_src) { + case TRIG_COUNT: + stop_count = cmd->stop_arg - 1; + + if (boardtype.reg_type == ni_reg_611x) { + // have to take 3 stage adc pipeline into account + stop_count += num_adc_stages_611x; + } + /* stage number of scans */ + devpriv->stc_writel(dev, stop_count, AI_SC_Load_A_Registers); + + mode1 |= AI_Start_Stop | AI_Mode_1_Reserved | AI_Trigger_Once; + devpriv->stc_writew(dev, mode1, AI_Mode_1_Register); + /* load SC (Scan Count) */ + devpriv->stc_writew(dev, AI_SC_Load, AI_Command_1_Register); + + devpriv->ai_continuous = 0; + if (stop_count == 0) { + devpriv->ai_cmd2 |= AI_End_On_End_Of_Scan; + interrupt_a_enable |= AI_STOP_Interrupt_Enable; + // this is required to get the last sample for chanlist_len > 1, not sure why + if (cmd->chanlist_len > 1) + start_stop_select |= + AI_STOP_Polarity | AI_STOP_Edge; + } + break; + case TRIG_NONE: + /* stage number of scans */ + devpriv->stc_writel(dev, 0, AI_SC_Load_A_Registers); + + mode1 |= AI_Start_Stop | AI_Mode_1_Reserved | AI_Continuous; + devpriv->stc_writew(dev, mode1, AI_Mode_1_Register); + + /* load SC (Scan Count) */ + devpriv->stc_writew(dev, AI_SC_Load, AI_Command_1_Register); + + devpriv->ai_continuous = 1; + + break; + } + + switch (cmd->scan_begin_src) { + case TRIG_TIMER: + /* + stop bits for non 611x boards + AI_SI_Special_Trigger_Delay=0 + AI_Pre_Trigger=0 + AI_START_STOP_Select_Register: + AI_START_Polarity=0 (?) rising edge + AI_START_Edge=1 edge triggered + AI_START_Sync=1 (?) + AI_START_Select=0 SI_TC + AI_STOP_Polarity=0 rising edge + AI_STOP_Edge=0 level + AI_STOP_Sync=1 + AI_STOP_Select=19 external pin (configuration mem) + */ + start_stop_select |= AI_START_Edge | AI_START_Sync; + devpriv->stc_writew(dev, start_stop_select, + AI_START_STOP_Select_Register); + + mode2 |= AI_SI_Reload_Mode(0); + /* AI_SI_Initial_Load_Source=A */ + mode2 &= ~AI_SI_Initial_Load_Source; + //mode2 |= AI_SC_Reload_Mode; + devpriv->stc_writew(dev, mode2, AI_Mode_2_Register); + + /* load SI */ + timer = ni_ns_to_timer(dev, cmd->scan_begin_arg, + TRIG_ROUND_NEAREST); + devpriv->stc_writel(dev, timer, AI_SI_Load_A_Registers); + devpriv->stc_writew(dev, AI_SI_Load, AI_Command_1_Register); + break; + case TRIG_EXT: + if (cmd->scan_begin_arg & CR_EDGE) + start_stop_select |= AI_START_Edge; + /* AI_START_Polarity==1 is falling edge */ + if (cmd->scan_begin_arg & CR_INVERT) + start_stop_select |= AI_START_Polarity; + if (cmd->scan_begin_src != cmd->convert_src || + (cmd->scan_begin_arg & ~CR_EDGE) != + (cmd->convert_arg & ~CR_EDGE)) + start_stop_select |= AI_START_Sync; + start_stop_select |= + AI_START_Select(1 + CR_CHAN(cmd->scan_begin_arg)); + devpriv->stc_writew(dev, start_stop_select, + AI_START_STOP_Select_Register); + break; + } + + switch (cmd->convert_src) { + case TRIG_TIMER: + case TRIG_NOW: + if (cmd->convert_arg == 0 || cmd->convert_src == TRIG_NOW) + timer = 1; + else + timer = ni_ns_to_timer(dev, cmd->convert_arg, + TRIG_ROUND_NEAREST); + devpriv->stc_writew(dev, 1, AI_SI2_Load_A_Register); /* 0,0 does not work. */ + devpriv->stc_writew(dev, timer, AI_SI2_Load_B_Register); + + /* AI_SI2_Reload_Mode = alternate */ + /* AI_SI2_Initial_Load_Source = A */ + mode2 &= ~AI_SI2_Initial_Load_Source; + mode2 |= AI_SI2_Reload_Mode; + devpriv->stc_writew(dev, mode2, AI_Mode_2_Register); + + /* AI_SI2_Load */ + devpriv->stc_writew(dev, AI_SI2_Load, AI_Command_1_Register); + + mode2 |= AI_SI2_Reload_Mode; // alternate + mode2 |= AI_SI2_Initial_Load_Source; // B + + devpriv->stc_writew(dev, mode2, AI_Mode_2_Register); + break; + case TRIG_EXT: + mode1 |= AI_CONVERT_Source_Select(1 + cmd->convert_arg); + if ((cmd->convert_arg & CR_INVERT) == 0) + mode1 |= AI_CONVERT_Source_Polarity; + devpriv->stc_writew(dev, mode1, AI_Mode_1_Register); + + mode2 |= AI_Start_Stop_Gate_Enable | AI_SC_Gate_Enable; + devpriv->stc_writew(dev, mode2, AI_Mode_2_Register); + + break; + } + + if (dev->irq) { + + /* interrupt on FIFO, errors, SC_TC */ + interrupt_a_enable |= AI_Error_Interrupt_Enable | + AI_SC_TC_Interrupt_Enable; + +#ifndef PCIDMA + interrupt_a_enable |= AI_FIFO_Interrupt_Enable; +#endif + + if (cmd->flags & TRIG_WAKE_EOS + || (devpriv->ai_cmd2 & AI_End_On_End_Of_Scan)) { + /* wake on end-of-scan */ + devpriv->aimode = AIMODE_SCAN; + } else { + devpriv->aimode = AIMODE_HALF_FULL; + } + + switch (devpriv->aimode) { + case AIMODE_HALF_FULL: + /*generate FIFO interrupts and DMA requests on half-full */ +#ifdef PCIDMA + devpriv->stc_writew(dev, AI_FIFO_Mode_HF_to_E, + AI_Mode_3_Register); +#else + devpriv->stc_writew(dev, AI_FIFO_Mode_HF, + AI_Mode_3_Register); +#endif + break; + case AIMODE_SAMPLE: + /*generate FIFO interrupts on non-empty */ + devpriv->stc_writew(dev, AI_FIFO_Mode_NE, + AI_Mode_3_Register); + break; + case AIMODE_SCAN: +#ifdef PCIDMA + devpriv->stc_writew(dev, AI_FIFO_Mode_NE, + AI_Mode_3_Register); +#else + devpriv->stc_writew(dev, AI_FIFO_Mode_HF, + AI_Mode_3_Register); +#endif + interrupt_a_enable |= AI_STOP_Interrupt_Enable; + break; + default: + break; + } + + devpriv->stc_writew(dev, AI_Error_Interrupt_Ack | AI_STOP_Interrupt_Ack | AI_START_Interrupt_Ack | AI_START2_Interrupt_Ack | AI_START1_Interrupt_Ack | AI_SC_TC_Interrupt_Ack | AI_SC_TC_Error_Confirm, Interrupt_A_Ack_Register); /* clear interrupts */ + + ni_set_bits(dev, Interrupt_A_Enable_Register, + interrupt_a_enable, 1); + + MDPRINTK("Interrupt_A_Enable_Register = 0x%04x\n", + devpriv->int_a_enable_reg); + } else { + /* interrupt on nothing */ + ni_set_bits(dev, Interrupt_A_Enable_Register, ~0, 0); + + /* XXX start polling if necessary */ + MDPRINTK("interrupting on nothing\n"); + } + + /* end configuration */ + devpriv->stc_writew(dev, AI_Configuration_End, Joint_Reset_Register); + + switch (cmd->scan_begin_src) { + case TRIG_TIMER: + devpriv->stc_writew(dev, + AI_SI2_Arm | AI_SI_Arm | AI_DIV_Arm | AI_SC_Arm, + AI_Command_1_Register); + break; + case TRIG_EXT: + /* XXX AI_SI_Arm? */ + devpriv->stc_writew(dev, + AI_SI2_Arm | AI_SI_Arm | AI_DIV_Arm | AI_SC_Arm, + AI_Command_1_Register); + break; + } + +#ifdef PCIDMA + { + int retval = ni_ai_setup_MITE_dma(dev); + if (retval) + return retval; + } + //mite_dump_regs(devpriv->mite); +#endif + + switch (cmd->start_src) { + case TRIG_NOW: + /* AI_START1_Pulse */ + devpriv->stc_writew(dev, AI_START1_Pulse | devpriv->ai_cmd2, + AI_Command_2_Register); + s->async->inttrig = NULL; + break; + case TRIG_EXT: + s->async->inttrig = NULL; + break; + case TRIG_INT: + s->async->inttrig = &ni_ai_inttrig; + break; + } + + MDPRINTK("exit ni_ai_cmd\n"); + + return 0; +} + +static int ni_ai_inttrig(struct comedi_device * dev, struct comedi_subdevice * s, + unsigned int trignum) +{ + if (trignum != 0) + return -EINVAL; + + devpriv->stc_writew(dev, AI_START1_Pulse | devpriv->ai_cmd2, + AI_Command_2_Register); + s->async->inttrig = NULL; + + return 1; +} + +static int ni_ai_config_analog_trig(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data); + +static int ni_ai_insn_config(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + if (insn->n < 1) + return -EINVAL; + + switch (data[0]) { + case INSN_CONFIG_ANALOG_TRIG: + return ni_ai_config_analog_trig(dev, s, insn, data); + case INSN_CONFIG_ALT_SOURCE: + if (boardtype.reg_type & ni_reg_m_series_mask) { + if (data[1] & ~(MSeries_AI_Bypass_Cal_Sel_Pos_Mask | + MSeries_AI_Bypass_Cal_Sel_Neg_Mask | + MSeries_AI_Bypass_Mode_Mux_Mask | + MSeries_AO_Bypass_AO_Cal_Sel_Mask)) { + return -EINVAL; + } + devpriv->ai_calib_source = data[1]; + } else if (boardtype.reg_type == ni_reg_6143) { + unsigned int calib_source; + + calib_source = data[1] & 0xf; + + if (calib_source > 0xF) + return -EINVAL; + + devpriv->ai_calib_source = calib_source; + ni_writew(calib_source, Calibration_Channel_6143); + } else { + unsigned int calib_source; + unsigned int calib_source_adjust; + + calib_source = data[1] & 0xf; + calib_source_adjust = (data[1] >> 4) & 0xff; + + if (calib_source >= 8) + return -EINVAL; + devpriv->ai_calib_source = calib_source; + if (boardtype.reg_type == ni_reg_611x) { + ni_writeb(calib_source_adjust, + Cal_Gain_Select_611x); + } + } + return 2; + default: + break; + } + + return -EINVAL; +} + +static int ni_ai_config_analog_trig(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + unsigned int a, b, modebits; + int err = 0; + + /* data[1] is flags + * data[2] is analog line + * data[3] is set level + * data[4] is reset level */ + if (!boardtype.has_analog_trig) + return -EINVAL; + if ((data[1] & 0xffff0000) != COMEDI_EV_SCAN_BEGIN) { + data[1] &= (COMEDI_EV_SCAN_BEGIN | 0xffff); + err++; + } + if (data[2] >= boardtype.n_adchan) { + data[2] = boardtype.n_adchan - 1; + err++; + } + if (data[3] > 255) { /* a */ + data[3] = 255; + err++; + } + if (data[4] > 255) { /* b */ + data[4] = 255; + err++; + } + /* + * 00 ignore + * 01 set + * 10 reset + * + * modes: + * 1 level: +b- +a- + * high mode 00 00 01 10 + * low mode 00 00 10 01 + * 2 level: (a<b) + * hysteresis low mode 10 00 00 01 + * hysteresis high mode 01 00 00 10 + * middle mode 10 01 01 10 + */ + + a = data[3]; + b = data[4]; + modebits = data[1] & 0xff; + if (modebits & 0xf0) { + /* two level mode */ + if (b < a) { + /* swap order */ + a = data[4]; + b = data[3]; + modebits = + ((data[1] & 0xf) << 4) | ((data[1] & 0xf0) >> + 4); + } + devpriv->atrig_low = a; + devpriv->atrig_high = b; + switch (modebits) { + case 0x81: /* low hysteresis mode */ + devpriv->atrig_mode = 6; + break; + case 0x42: /* high hysteresis mode */ + devpriv->atrig_mode = 3; + break; + case 0x96: /* middle window mode */ + devpriv->atrig_mode = 2; + break; + default: + data[1] &= ~0xff; + err++; + } + } else { + /* one level mode */ + if (b != 0) { + data[4] = 0; + err++; + } + switch (modebits) { + case 0x06: /* high window mode */ + devpriv->atrig_high = a; + devpriv->atrig_mode = 0; + break; + case 0x09: /* low window mode */ + devpriv->atrig_low = a; + devpriv->atrig_mode = 1; + break; + default: + data[1] &= ~0xff; + err++; + } + } + if (err) + return -EAGAIN; + return 5; +} + +/* munge data from unsigned to 2's complement for analog output bipolar modes */ +static void ni_ao_munge(struct comedi_device * dev, struct comedi_subdevice * s, + void *data, unsigned int num_bytes, unsigned int chan_index) +{ + struct comedi_async *async = s->async; + unsigned int range; + unsigned int i; + unsigned int offset; + unsigned int length = num_bytes / sizeof(short); + short *array = data; + + offset = 1 << (boardtype.aobits - 1); + for (i = 0; i < length; i++) { + range = CR_RANGE(async->cmd.chanlist[chan_index]); + if (boardtype.ao_unipolar == 0 || (range & 1) == 0) + array[i] -= offset; +#ifdef PCIDMA + array[i] = cpu_to_le16(array[i]); +#endif + chan_index++; + chan_index %= async->cmd.chanlist_len; + } +} + +static int ni_m_series_ao_config_chanlist(struct comedi_device * dev, + struct comedi_subdevice * s, unsigned int chanspec[], unsigned int n_chans, + int timed) +{ + unsigned int range; + unsigned int chan; + unsigned int conf; + int i; + int invert = 0; + + if(timed) { + for (i = 0; i < boardtype.n_aochan; ++i) { + devpriv->ao_conf[i] &= ~MSeries_AO_Update_Timed_Bit; + ni_writeb(devpriv->ao_conf[i], M_Offset_AO_Config_Bank(i)); + ni_writeb(0xf, M_Offset_AO_Waveform_Order(i)); + } + } + for (i = 0; i < n_chans; i++) { + const struct comedi_krange *krange; + chan = CR_CHAN(chanspec[i]); + range = CR_RANGE(chanspec[i]); + krange = s->range_table->range + range; + invert = 0; + conf = 0; + switch (krange->max - krange->min) { + case 20000000: + conf |= MSeries_AO_DAC_Reference_10V_Internal_Bits; + ni_writeb(0, M_Offset_AO_Reference_Attenuation(chan)); + break; + case 10000000: + conf |= MSeries_AO_DAC_Reference_5V_Internal_Bits; + ni_writeb(0, M_Offset_AO_Reference_Attenuation(chan)); + break; + case 4000000: + conf |= MSeries_AO_DAC_Reference_10V_Internal_Bits; + ni_writeb(MSeries_Attenuate_x5_Bit, + M_Offset_AO_Reference_Attenuation(chan)); + break; + case 2000000: + conf |= MSeries_AO_DAC_Reference_5V_Internal_Bits; + ni_writeb(MSeries_Attenuate_x5_Bit, + M_Offset_AO_Reference_Attenuation(chan)); + break; + default: + rt_printk("%s: bug! unhandled ao reference voltage\n", + __FUNCTION__); + break; + } + switch (krange->max + krange->min) { + case 0: + conf |= MSeries_AO_DAC_Offset_0V_Bits; + break; + case 10000000: + conf |= MSeries_AO_DAC_Offset_5V_Bits; + break; + default: + rt_printk("%s: bug! unhandled ao offset voltage\n", + __FUNCTION__); + break; + } + if (timed) + conf |= MSeries_AO_Update_Timed_Bit; + ni_writeb(conf, M_Offset_AO_Config_Bank(chan)); + devpriv->ao_conf[chan] = conf; + ni_writeb(i, M_Offset_AO_Waveform_Order(chan)); + } + return invert; +} + +static int ni_old_ao_config_chanlist(struct comedi_device * dev, struct comedi_subdevice * s, + unsigned int chanspec[], unsigned int n_chans) +{ + unsigned int range; + unsigned int chan; + unsigned int conf; + int i; + int invert = 0; + + for (i = 0; i < n_chans; i++) { + chan = CR_CHAN(chanspec[i]); + range = CR_RANGE(chanspec[i]); + conf = AO_Channel(chan); + + if (boardtype.ao_unipolar) { + if ((range & 1) == 0) { + conf |= AO_Bipolar; + invert = (1 << (boardtype.aobits - 1)); + } else { + invert = 0; + } + if (range & 2) + conf |= AO_Ext_Ref; + } else { + conf |= AO_Bipolar; + invert = (1 << (boardtype.aobits - 1)); + } + + /* not all boards can deglitch, but this shouldn't hurt */ + if (chanspec[i] & CR_DEGLITCH) + conf |= AO_Deglitch; + + /* analog reference */ + /* AREF_OTHER connects AO ground to AI ground, i think */ + conf |= (CR_AREF(chanspec[i]) == + AREF_OTHER) ? AO_Ground_Ref : 0; + + ni_writew(conf, AO_Configuration); + devpriv->ao_conf[chan] = conf; + } + return invert; +} + +static int ni_ao_config_chanlist(struct comedi_device * dev, struct comedi_subdevice * s, + unsigned int chanspec[], unsigned int n_chans, int timed) +{ + if (boardtype.reg_type & ni_reg_m_series_mask) + return ni_m_series_ao_config_chanlist(dev, s, chanspec, n_chans, + timed); + else + return ni_old_ao_config_chanlist(dev, s, chanspec, n_chans); +} +static int ni_ao_insn_read(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + data[0] = devpriv->ao[CR_CHAN(insn->chanspec)]; + + return 1; +} + +static int ni_ao_insn_write(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + unsigned int chan = CR_CHAN(insn->chanspec); + unsigned int invert; + + invert = ni_ao_config_chanlist(dev, s, &insn->chanspec, 1, 0); + + devpriv->ao[chan] = data[0]; + + if (boardtype.reg_type & ni_reg_m_series_mask) { + ni_writew(data[0], M_Offset_DAC_Direct_Data(chan)); + } else + ni_writew(data[0] ^ invert, + (chan) ? DAC1_Direct_Data : DAC0_Direct_Data); + + return 1; +} + +static int ni_ao_insn_write_671x(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + unsigned int chan = CR_CHAN(insn->chanspec); + unsigned int invert; + + ao_win_out(1 << chan, AO_Immediate_671x); + invert = 1 << (boardtype.aobits - 1); + + ni_ao_config_chanlist(dev, s, &insn->chanspec, 1, 0); + + devpriv->ao[chan] = data[0]; + ao_win_out(data[0] ^ invert, DACx_Direct_Data_671x(chan)); + + return 1; +} + +static int ni_ao_insn_config(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + switch (data[0]) { + case INSN_CONFIG_GET_HARDWARE_BUFFER_SIZE: + switch(data[1]) + { + case COMEDI_OUTPUT: + data[2] = 1 + boardtype.ao_fifo_depth * sizeof(short); + if(devpriv->mite) data[2] += devpriv->mite->fifo_size; + break; + case COMEDI_INPUT: + data[2] = 0; + break; + default: + return -EINVAL; + break; + } + return 0; + default: + break; + } + + return -EINVAL; +} + +static int ni_ao_inttrig(struct comedi_device * dev, struct comedi_subdevice * s, + unsigned int trignum) +{ + int ret; + int interrupt_b_bits; + int i; + static const int timeout = 1000; + + if (trignum != 0) + return -EINVAL; + + /* Null trig at beginning prevent ao start trigger from executing more than + once per command (and doing things like trying to allocate the ao dma channel + multiple times) */ + s->async->inttrig = NULL; + + ni_set_bits(dev, Interrupt_B_Enable_Register, + AO_FIFO_Interrupt_Enable | AO_Error_Interrupt_Enable, 0); + interrupt_b_bits = AO_Error_Interrupt_Enable; +#ifdef PCIDMA + devpriv->stc_writew(dev, 1, DAC_FIFO_Clear); + if (boardtype.reg_type & ni_reg_6xxx_mask) + ni_ao_win_outl(dev, 0x6, AO_FIFO_Offset_Load_611x); + ret = ni_ao_setup_MITE_dma(dev); + if (ret) + return ret; + ret = ni_ao_wait_for_dma_load(dev); + if (ret < 0) + return ret; +#else + ret = ni_ao_prep_fifo(dev, s); + if (ret == 0) + return -EPIPE; + + interrupt_b_bits |= AO_FIFO_Interrupt_Enable; +#endif + + devpriv->stc_writew(dev, devpriv->ao_mode3 | AO_Not_An_UPDATE, + AO_Mode_3_Register); + devpriv->stc_writew(dev, devpriv->ao_mode3, AO_Mode_3_Register); + /* wait for DACs to be loaded */ + for (i = 0; i < timeout; i++) { + comedi_udelay(1); + if ((devpriv->stc_readw(dev, + Joint_Status_2_Register) & + AO_TMRDACWRs_In_Progress_St) == 0) + break; + } + if (i == timeout) { + comedi_error(dev, + "timed out waiting for AO_TMRDACWRs_In_Progress_St to clear"); + return -EIO; + } + // stc manual says we are need to clear error interrupt after AO_TMRDACWRs_In_Progress_St clears + devpriv->stc_writew(dev, AO_Error_Interrupt_Ack, + Interrupt_B_Ack_Register); + + ni_set_bits(dev, Interrupt_B_Enable_Register, interrupt_b_bits, 1); + + devpriv->stc_writew(dev, + devpriv-> + ao_cmd1 | AO_UI_Arm | AO_UC_Arm | AO_BC_Arm | + AO_DAC1_Update_Mode | AO_DAC0_Update_Mode, + AO_Command_1_Register); + + devpriv->stc_writew(dev, devpriv->ao_cmd2 | AO_START1_Pulse, + AO_Command_2_Register); + + return 0; +} + +static int ni_ao_cmd(struct comedi_device * dev, struct comedi_subdevice * s) +{ + const struct comedi_cmd *cmd = &s->async->cmd; + int bits; + int i; + unsigned trigvar; + + if (dev->irq == 0) { + comedi_error(dev, "cannot run command without an irq"); + return -EIO; + } + + devpriv->stc_writew(dev, AO_Configuration_Start, Joint_Reset_Register); + + devpriv->stc_writew(dev, AO_Disarm, AO_Command_1_Register); + + if (boardtype.reg_type & ni_reg_6xxx_mask) { + ao_win_out(CLEAR_WG, AO_Misc_611x); + + bits = 0; + for (i = 0; i < cmd->chanlist_len; i++) { + int chan; + + chan = CR_CHAN(cmd->chanlist[i]); + bits |= 1 << chan; + ao_win_out(chan, AO_Waveform_Generation_611x); + } + ao_win_out(bits, AO_Timed_611x); + } + + ni_ao_config_chanlist(dev, s, cmd->chanlist, cmd->chanlist_len, 1); + + if (cmd->stop_src == TRIG_NONE) { + devpriv->ao_mode1 |= AO_Continuous; + devpriv->ao_mode1 &= ~AO_Trigger_Once; + } else { + devpriv->ao_mode1 &= ~AO_Continuous; + devpriv->ao_mode1 |= AO_Trigger_Once; + } + devpriv->stc_writew(dev, devpriv->ao_mode1, AO_Mode_1_Register); + switch (cmd->start_src) { + case TRIG_INT: + case TRIG_NOW: + devpriv->ao_trigger_select &= + ~(AO_START1_Polarity | AO_START1_Select(-1)); + devpriv->ao_trigger_select |= AO_START1_Edge | AO_START1_Sync; + devpriv->stc_writew(dev, devpriv->ao_trigger_select, + AO_Trigger_Select_Register); + break; + case TRIG_EXT: + devpriv->ao_trigger_select = AO_START1_Select(CR_CHAN(cmd->start_arg)+1); + if (cmd->start_arg & CR_INVERT) + devpriv->ao_trigger_select |= AO_START1_Polarity; // 0=active high, 1=active low. see daq-stc 3-24 (p186) + if (cmd->start_arg & CR_EDGE) + devpriv->ao_trigger_select |= AO_START1_Edge; // 0=edge detection disabled, 1=enabled + devpriv->stc_writew(dev, devpriv->ao_trigger_select, AO_Trigger_Select_Register); + break; + default: + BUG(); + break; + } + devpriv->ao_mode3 &= ~AO_Trigger_Length; + devpriv->stc_writew(dev, devpriv->ao_mode3, AO_Mode_3_Register); + + devpriv->stc_writew(dev, devpriv->ao_mode1, AO_Mode_1_Register); + devpriv->ao_mode2 &= ~AO_BC_Initial_Load_Source; + devpriv->stc_writew(dev, devpriv->ao_mode2, AO_Mode_2_Register); + if (cmd->stop_src == TRIG_NONE) { + devpriv->stc_writel(dev, 0xffffff, AO_BC_Load_A_Register); + } else { + devpriv->stc_writel(dev, 0, AO_BC_Load_A_Register); + } + devpriv->stc_writew(dev, AO_BC_Load, AO_Command_1_Register); + devpriv->ao_mode2 &= ~AO_UC_Initial_Load_Source; + devpriv->stc_writew(dev, devpriv->ao_mode2, AO_Mode_2_Register); + switch (cmd->stop_src) { + case TRIG_COUNT: + if(boardtype.reg_type & ni_reg_m_series_mask) + { + // this is how the NI example code does it for m-series boards, verified correct with 6259 + devpriv->stc_writel(dev, cmd->stop_arg - 1, AO_UC_Load_A_Register); + devpriv->stc_writew(dev, AO_UC_Load, AO_Command_1_Register); + }else + { + devpriv->stc_writel(dev, cmd->stop_arg, AO_UC_Load_A_Register); + devpriv->stc_writew(dev, AO_UC_Load, AO_Command_1_Register); + devpriv->stc_writel(dev, cmd->stop_arg - 1, + AO_UC_Load_A_Register); + } + break; + case TRIG_NONE: + devpriv->stc_writel(dev, 0xffffff, AO_UC_Load_A_Register); + devpriv->stc_writew(dev, AO_UC_Load, AO_Command_1_Register); + devpriv->stc_writel(dev, 0xffffff, AO_UC_Load_A_Register); + break; + default: + devpriv->stc_writel(dev, 0, AO_UC_Load_A_Register); + devpriv->stc_writew(dev, AO_UC_Load, AO_Command_1_Register); + devpriv->stc_writel(dev, cmd->stop_arg, AO_UC_Load_A_Register); + } + + devpriv->ao_mode1 &= + ~(AO_UI_Source_Select(0x1f) | AO_UI_Source_Polarity | + AO_UPDATE_Source_Select(0x1f) | AO_UPDATE_Source_Polarity); + switch (cmd->scan_begin_src) { + case TRIG_TIMER: + devpriv->ao_cmd2 &= ~AO_BC_Gate_Enable; + trigvar = + ni_ns_to_timer(dev, cmd->scan_begin_arg, + TRIG_ROUND_NEAREST); + devpriv->stc_writel(dev, 1, AO_UI_Load_A_Register); + devpriv->stc_writew(dev, AO_UI_Load, AO_Command_1_Register); + devpriv->stc_writel(dev, trigvar, AO_UI_Load_A_Register); + break; + case TRIG_EXT: + devpriv->ao_mode1 |= + AO_UPDATE_Source_Select(cmd->scan_begin_arg); + if (cmd->scan_begin_arg & CR_INVERT) + devpriv->ao_mode1 |= AO_UPDATE_Source_Polarity; + devpriv->ao_cmd2 |= AO_BC_Gate_Enable; + break; + default: + BUG(); + break; + } + devpriv->stc_writew(dev, devpriv->ao_cmd2, AO_Command_2_Register); + devpriv->stc_writew(dev, devpriv->ao_mode1, AO_Mode_1_Register); + devpriv->ao_mode2 &= + ~(AO_UI_Reload_Mode(3) | AO_UI_Initial_Load_Source); + devpriv->stc_writew(dev, devpriv->ao_mode2, AO_Mode_2_Register); + + if (cmd->scan_end_arg > 1) { + devpriv->ao_mode1 |= AO_Multiple_Channels; + devpriv->stc_writew(dev, + AO_Number_Of_Channels(cmd->scan_end_arg - + 1) | + AO_UPDATE_Output_Select + (AO_Update_Output_High_Z), + AO_Output_Control_Register); + } else { + unsigned bits; + devpriv->ao_mode1 &= ~AO_Multiple_Channels; + bits = AO_UPDATE_Output_Select(AO_Update_Output_High_Z); + if (boardtype.reg_type & (ni_reg_m_series_mask | ni_reg_6xxx_mask)) { + bits |= AO_Number_Of_Channels(0); + } else { + bits |= AO_Number_Of_Channels(CR_CHAN(cmd-> + chanlist[0])); + } + devpriv->stc_writew(dev, bits, + AO_Output_Control_Register); + } + devpriv->stc_writew(dev, devpriv->ao_mode1, AO_Mode_1_Register); + + devpriv->stc_writew(dev, AO_DAC0_Update_Mode | AO_DAC1_Update_Mode, + AO_Command_1_Register); + + devpriv->ao_mode3 |= AO_Stop_On_Overrun_Error; + devpriv->stc_writew(dev, devpriv->ao_mode3, AO_Mode_3_Register); + + devpriv->ao_mode2 &= ~AO_FIFO_Mode_Mask; +#ifdef PCIDMA + devpriv->ao_mode2 |= AO_FIFO_Mode_HF_to_F; +#else + devpriv->ao_mode2 |= AO_FIFO_Mode_HF; +#endif + devpriv->ao_mode2 &= ~AO_FIFO_Retransmit_Enable; + devpriv->stc_writew(dev, devpriv->ao_mode2, AO_Mode_2_Register); + + bits = AO_BC_Source_Select | AO_UPDATE_Pulse_Width | + AO_TMRDACWR_Pulse_Width; + if (boardtype.ao_fifo_depth) + bits |= AO_FIFO_Enable; + else + bits |= AO_DMA_PIO_Control; +#if 0 + /* F Hess: windows driver does not set AO_Number_Of_DAC_Packages bit for 6281, + verified with bus analyzer. */ + if (boardtype.reg_type & ni_reg_m_series_mask) + bits |= AO_Number_Of_DAC_Packages; +#endif + devpriv->stc_writew(dev, bits, AO_Personal_Register); + // enable sending of ao dma requests + devpriv->stc_writew(dev, AO_AOFREQ_Enable, AO_Start_Select_Register); + + devpriv->stc_writew(dev, AO_Configuration_End, Joint_Reset_Register); + + if (cmd->stop_src == TRIG_COUNT) { + devpriv->stc_writew(dev, AO_BC_TC_Interrupt_Ack, + Interrupt_B_Ack_Register); + ni_set_bits(dev, Interrupt_B_Enable_Register, + AO_BC_TC_Interrupt_Enable, 1); + } + + s->async->inttrig = &ni_ao_inttrig; + + return 0; +} + +static int ni_ao_cmdtest(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_cmd * cmd) +{ + int err = 0; + int tmp; + + /* step 1: make sure trigger sources are trivially valid */ + + if ((cmd->flags & CMDF_WRITE) == 0) { + cmd->flags |= CMDF_WRITE; + } + + tmp = cmd->start_src; + cmd->start_src &= TRIG_INT | TRIG_EXT; + if (!cmd->start_src || tmp != cmd->start_src) + err++; + + tmp = cmd->scan_begin_src; + cmd->scan_begin_src &= TRIG_TIMER | TRIG_EXT; + if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src) + err++; + + tmp = cmd->convert_src; + cmd->convert_src &= TRIG_NOW; + if (!cmd->convert_src || tmp != cmd->convert_src) + err++; + + tmp = cmd->scan_end_src; + cmd->scan_end_src &= TRIG_COUNT; + if (!cmd->scan_end_src || tmp != cmd->scan_end_src) + err++; + + tmp = cmd->stop_src; + cmd->stop_src &= TRIG_COUNT | TRIG_NONE; + if (!cmd->stop_src || tmp != cmd->stop_src) + err++; + + if (err) + return 1; + + /* step 2: make sure trigger sources are unique and mutually compatible */ + + if (cmd->stop_src != TRIG_COUNT && cmd->stop_src != TRIG_NONE) + err++; + + if (err) + return 2; + + /* step 3: make sure arguments are trivially compatible */ + + if (cmd->start_src == TRIG_EXT) { + /* external trigger */ + unsigned int tmp = CR_CHAN(cmd->start_arg); + + if (tmp > 18) + tmp = 18; + tmp |= (cmd->start_arg & (CR_INVERT | CR_EDGE)); + if (cmd->start_arg != tmp) { + cmd->start_arg = tmp; + err++; + } + } else { + if (cmd->start_arg != 0) { + /* true for both TRIG_NOW and TRIG_INT */ + cmd->start_arg = 0; + err++; + } + } + if (cmd->scan_begin_src == TRIG_TIMER) { + if (cmd->scan_begin_arg < boardtype.ao_speed) { + cmd->scan_begin_arg = boardtype.ao_speed; + err++; + } + if (cmd->scan_begin_arg > devpriv->clock_ns * 0xffffff) { /* XXX check */ + cmd->scan_begin_arg = devpriv->clock_ns * 0xffffff; + err++; + } + } + if (cmd->convert_arg != 0) { + cmd->convert_arg = 0; + err++; + } + if (cmd->scan_end_arg != cmd->chanlist_len) { + cmd->scan_end_arg = cmd->chanlist_len; + err++; + } + if (cmd->stop_src == TRIG_COUNT) { /* XXX check */ + if (cmd->stop_arg > 0x00ffffff) { + cmd->stop_arg = 0x00ffffff; + err++; + } + } else { + /* TRIG_NONE */ + if (cmd->stop_arg != 0) { + cmd->stop_arg = 0; + err++; + } + } + + if (err) + return 3; + + /* step 4: fix up any arguments */ + if (cmd->scan_begin_src == TRIG_TIMER) { + tmp = cmd->scan_begin_arg; + cmd->scan_begin_arg = + ni_timer_to_ns(dev, ni_ns_to_timer(dev, + cmd->scan_begin_arg, + cmd->flags & TRIG_ROUND_MASK)); + if (tmp != cmd->scan_begin_arg) + err++; + } + if (err) + return 4; + + /* step 5: fix up chanlist */ + + if (err) + return 5; + + return 0; +} + +static int ni_ao_reset(struct comedi_device * dev, struct comedi_subdevice * s) +{ + //devpriv->ao0p=0x0000; + //ni_writew(devpriv->ao0p,AO_Configuration); + + //devpriv->ao1p=AO_Channel(1); + //ni_writew(devpriv->ao1p,AO_Configuration); + + ni_release_ao_mite_channel(dev); + + devpriv->stc_writew(dev, AO_Configuration_Start, Joint_Reset_Register); + devpriv->stc_writew(dev, AO_Disarm, AO_Command_1_Register); + ni_set_bits(dev, Interrupt_B_Enable_Register, ~0, 0); + devpriv->stc_writew(dev, AO_BC_Source_Select, AO_Personal_Register); + devpriv->stc_writew(dev, 0x3f98, Interrupt_B_Ack_Register); + devpriv->stc_writew(dev, AO_BC_Source_Select | AO_UPDATE_Pulse_Width | + AO_TMRDACWR_Pulse_Width, AO_Personal_Register); + devpriv->stc_writew(dev, 0, AO_Output_Control_Register); + devpriv->stc_writew(dev, 0, AO_Start_Select_Register); + devpriv->ao_cmd1 = 0; + devpriv->stc_writew(dev, devpriv->ao_cmd1, AO_Command_1_Register); + devpriv->ao_cmd2 = 0; + devpriv->stc_writew(dev, devpriv->ao_cmd2, AO_Command_2_Register); + devpriv->ao_mode1 = 0; + devpriv->stc_writew(dev, devpriv->ao_mode1, AO_Mode_1_Register); + devpriv->ao_mode2 = 0; + devpriv->stc_writew(dev, devpriv->ao_mode2, AO_Mode_2_Register); + if (boardtype.reg_type & ni_reg_m_series_mask) + devpriv->ao_mode3 = AO_Last_Gate_Disable; + else + devpriv->ao_mode3 = 0; + devpriv->stc_writew(dev, devpriv->ao_mode3, AO_Mode_3_Register); + devpriv->ao_trigger_select = 0; + devpriv->stc_writew(dev, devpriv->ao_trigger_select, + AO_Trigger_Select_Register); + if (boardtype.reg_type & ni_reg_6xxx_mask) { + unsigned immediate_bits = 0; + unsigned i; + for(i = 0; i < s->n_chan; ++i) + { + immediate_bits |= 1 << i; + } + ao_win_out(immediate_bits, AO_Immediate_671x); + ao_win_out(CLEAR_WG, AO_Misc_611x); + } + devpriv->stc_writew(dev, AO_Configuration_End, Joint_Reset_Register); + + return 0; +} + +// digital io + +static int ni_dio_insn_config(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ +#ifdef DEBUG_DIO + rt_printk("ni_dio_insn_config() chan=%d io=%d\n", + CR_CHAN(insn->chanspec), data[0]); +#endif + switch (data[0]) { + case INSN_CONFIG_DIO_OUTPUT: + s->io_bits |= 1 << CR_CHAN(insn->chanspec); + break; + case INSN_CONFIG_DIO_INPUT: + s->io_bits &= ~(1 << CR_CHAN(insn->chanspec)); + break; + case INSN_CONFIG_DIO_QUERY: + data[1] = + (s->io_bits & (1 << CR_CHAN(insn-> + chanspec))) ? COMEDI_OUTPUT : + COMEDI_INPUT; + return insn->n; + break; + default: + return -EINVAL; + } + + devpriv->dio_control &= ~DIO_Pins_Dir_Mask; + devpriv->dio_control |= DIO_Pins_Dir(s->io_bits); + devpriv->stc_writew(dev, devpriv->dio_control, DIO_Control_Register); + + return 1; +} + +static int ni_dio_insn_bits(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ +#ifdef DEBUG_DIO + rt_printk("ni_dio_insn_bits() mask=0x%x bits=0x%x\n", data[0], data[1]); +#endif + if (insn->n != 2) + return -EINVAL; + if (data[0]) { + /* Perform check to make sure we're not using the + serial part of the dio */ + if ((data[0] & (DIO_SDIN | DIO_SDOUT)) + && devpriv->serial_interval_ns) + return -EBUSY; + + s->state &= ~data[0]; + s->state |= (data[0] & data[1]); + devpriv->dio_output &= ~DIO_Parallel_Data_Mask; + devpriv->dio_output |= DIO_Parallel_Data_Out(s->state); + devpriv->stc_writew(dev, devpriv->dio_output, + DIO_Output_Register); + } + data[1] = devpriv->stc_readw(dev, DIO_Parallel_Input_Register); + + return 2; +} + +static int ni_m_series_dio_insn_config(struct comedi_device * dev, + struct comedi_subdevice * s, struct comedi_insn * insn, unsigned int * data) +{ +#ifdef DEBUG_DIO + rt_printk("ni_m_series_dio_insn_config() chan=%d io=%d\n", + CR_CHAN(insn->chanspec), data[0]); +#endif + switch (data[0]) { + case INSN_CONFIG_DIO_OUTPUT: + s->io_bits |= 1 << CR_CHAN(insn->chanspec); + break; + case INSN_CONFIG_DIO_INPUT: + s->io_bits &= ~(1 << CR_CHAN(insn->chanspec)); + break; + case INSN_CONFIG_DIO_QUERY: + data[1] = + (s->io_bits & (1 << CR_CHAN(insn-> + chanspec))) ? COMEDI_OUTPUT : + COMEDI_INPUT; + return insn->n; + break; + default: + return -EINVAL; + } + + ni_writel(s->io_bits, M_Offset_DIO_Direction); + + return 1; +} + +static int ni_m_series_dio_insn_bits(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ +#ifdef DEBUG_DIO + rt_printk("ni_m_series_dio_insn_bits() mask=0x%x bits=0x%x\n", data[0], + data[1]); +#endif + if (insn->n != 2) + return -EINVAL; + if (data[0]) { + s->state &= ~data[0]; + s->state |= (data[0] & data[1]); + ni_writel(s->state, M_Offset_Static_Digital_Output); + } + data[1] = ni_readl(M_Offset_Static_Digital_Input); + + return 2; +} + +static int ni_cdio_cmdtest(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_cmd * cmd) +{ + int err = 0; + int tmp; + int sources; + unsigned i; + + /* step 1: make sure trigger sources are trivially valid */ + + tmp = cmd->start_src; + sources = TRIG_INT; + cmd->start_src &= sources; + if (!cmd->start_src || tmp != cmd->start_src) + err++; + + tmp = cmd->scan_begin_src; + cmd->scan_begin_src &= TRIG_EXT; + if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src) + err++; + + tmp = cmd->convert_src; + cmd->convert_src &= TRIG_NOW; + if (!cmd->convert_src || tmp != cmd->convert_src) + err++; + + tmp = cmd->scan_end_src; + cmd->scan_end_src &= TRIG_COUNT; + if (!cmd->scan_end_src || tmp != cmd->scan_end_src) + err++; + + tmp = cmd->stop_src; + cmd->stop_src &= TRIG_NONE; + if (!cmd->stop_src || tmp != cmd->stop_src) + err++; + + if (err) + return 1; + + /* step 2: make sure trigger sources are unique... */ + + if (cmd->start_src != TRIG_INT) + err++; + if (cmd->scan_begin_src != TRIG_EXT) + err++; + if (cmd->convert_src != TRIG_NOW) + err++; + if (cmd->stop_src != TRIG_NONE) + err++; + /* ... and mutually compatible */ + + if (err) + return 2; + + /* step 3: make sure arguments are trivially compatible */ + if (cmd->start_src == TRIG_INT) { + if (cmd->start_arg != 0) { + cmd->start_arg = 0; + err++; + } + } + if (cmd->scan_begin_src == TRIG_EXT) { + tmp = cmd->scan_begin_arg; + tmp &= CR_PACK_FLAGS(CDO_Sample_Source_Select_Mask, 0, 0, + CR_INVERT); + if (tmp != cmd->scan_begin_arg) { + err++; + } + } + if (cmd->convert_src == TRIG_NOW) { + if (cmd->convert_arg) { + cmd->convert_arg = 0; + err++; + } + } + + if (cmd->scan_end_arg != cmd->chanlist_len) { + cmd->scan_end_arg = cmd->chanlist_len; + err++; + } + + if (cmd->stop_src == TRIG_NONE) { + if (cmd->stop_arg != 0) { + cmd->stop_arg = 0; + err++; + } + } + + if (err) + return 3; + + /* step 4: fix up any arguments */ + + if (err) + return 4; + + /* step 5: check chanlist */ + + for (i = 0; i < cmd->chanlist_len; ++i) { + if (cmd->chanlist[i] != i) + err = 1; + } + + if (err) + return 5; + + return 0; +} + +static int ni_cdio_cmd(struct comedi_device * dev, struct comedi_subdevice * s) +{ + const struct comedi_cmd *cmd = &s->async->cmd; + unsigned cdo_mode_bits = CDO_FIFO_Mode_Bit | CDO_Halt_On_Error_Bit; + int retval; + + ni_writel(CDO_Reset_Bit, M_Offset_CDIO_Command); + switch (cmd->scan_begin_src) { + case TRIG_EXT: + cdo_mode_bits |= + CR_CHAN(cmd-> + scan_begin_arg) & CDO_Sample_Source_Select_Mask; + break; + default: + BUG(); + break; + } + if (cmd->scan_begin_arg & CR_INVERT) + cdo_mode_bits |= CDO_Polarity_Bit; + ni_writel(cdo_mode_bits, M_Offset_CDO_Mode); + if (s->io_bits) { + ni_writel(s->state, M_Offset_CDO_FIFO_Data); + ni_writel(CDO_SW_Update_Bit, M_Offset_CDIO_Command); + ni_writel(s->io_bits, M_Offset_CDO_Mask_Enable); + } else { + comedi_error(dev, + "attempted to run digital output command with no lines configured as outputs"); + return -EIO; + } + retval = ni_request_cdo_mite_channel(dev); + if (retval < 0) { + return retval; + } + s->async->inttrig = &ni_cdo_inttrig; + return 0; +} + +static int ni_cdo_inttrig(struct comedi_device * dev, struct comedi_subdevice * s, + unsigned int trignum) +{ +#ifdef PCIDMA + unsigned long flags; +#endif + int retval = 0; + unsigned i; + const unsigned timeout = 100; + + s->async->inttrig = NULL; + + /* read alloc the entire buffer */ + comedi_buf_read_alloc(s->async, s->async->prealloc_bufsz); + +#ifdef PCIDMA + comedi_spin_lock_irqsave(&devpriv->mite_channel_lock, flags); + if (devpriv->cdo_mite_chan) { + mite_prep_dma(devpriv->cdo_mite_chan, 32, 32); + mite_dma_arm(devpriv->cdo_mite_chan); + } else { + comedi_error(dev, "BUG: no cdo mite channel?"); + retval = -EIO; + } + comedi_spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags); + if (retval < 0) + return retval; +#endif +// XXX not sure what interrupt C group does +// ni_writeb(Interrupt_Group_C_Enable_Bit, M_Offset_Interrupt_C_Enable); + //wait for dma to fill output fifo + for (i = 0; i < timeout; ++i) { + if (ni_readl(M_Offset_CDIO_Status) & CDO_FIFO_Full_Bit) + break; + comedi_udelay(10); + } + if (i == timeout) { + comedi_error(dev, "dma failed to fill cdo fifo!"); + ni_cdio_cancel(dev, s); + return -EIO; + } + ni_writel(CDO_Arm_Bit | CDO_Error_Interrupt_Enable_Set_Bit | + CDO_Empty_FIFO_Interrupt_Enable_Set_Bit, M_Offset_CDIO_Command); + return retval; +} + +static int ni_cdio_cancel(struct comedi_device * dev, struct comedi_subdevice * s) +{ + ni_writel(CDO_Disarm_Bit | CDO_Error_Interrupt_Enable_Clear_Bit | + CDO_Empty_FIFO_Interrupt_Enable_Clear_Bit | + CDO_FIFO_Request_Interrupt_Enable_Clear_Bit, + M_Offset_CDIO_Command); +// XXX not sure what interrupt C group does +// ni_writeb(0, M_Offset_Interrupt_C_Enable); + ni_writel(0, M_Offset_CDO_Mask_Enable); + ni_release_cdo_mite_channel(dev); + return 0; +} + +static void handle_cdio_interrupt(struct comedi_device * dev) +{ + unsigned cdio_status; + struct comedi_subdevice *s = dev->subdevices + NI_DIO_SUBDEV; +#ifdef PCIDMA + unsigned long flags; +#endif + + if ((boardtype.reg_type & ni_reg_m_series_mask) == 0) { + return; + } +#ifdef PCIDMA + comedi_spin_lock_irqsave(&devpriv->mite_channel_lock, flags); + if (devpriv->cdo_mite_chan) { + unsigned cdo_mite_status = + mite_get_status(devpriv->cdo_mite_chan); + if (cdo_mite_status & CHSR_LINKC) { + writel(CHOR_CLRLC, + devpriv->mite->mite_io_addr + + MITE_CHOR(devpriv->cdo_mite_chan->channel)); + } + mite_sync_output_dma(devpriv->cdo_mite_chan, s->async); + } + comedi_spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags); +#endif + + cdio_status = ni_readl(M_Offset_CDIO_Status); + if (cdio_status & (CDO_Overrun_Bit | CDO_Underflow_Bit)) { +// rt_printk("cdio error: statux=0x%x\n", cdio_status); + ni_writel(CDO_Error_Interrupt_Confirm_Bit, M_Offset_CDIO_Command); // XXX just guessing this is needed and does something useful + s->async->events |= COMEDI_CB_OVERFLOW; + } + if (cdio_status & CDO_FIFO_Empty_Bit) { +// rt_printk("cdio fifo empty\n"); + ni_writel(CDO_Empty_FIFO_Interrupt_Enable_Clear_Bit, + M_Offset_CDIO_Command); +// s->async->events |= COMEDI_CB_EOA; + } + ni_event(dev, s); +} + +static int ni_serial_insn_config(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + int err = insn->n; + unsigned char byte_out, byte_in = 0; + + if (insn->n != 2) + return -EINVAL; + + switch (data[0]) { + case INSN_CONFIG_SERIAL_CLOCK: + +#ifdef DEBUG_DIO + rt_printk("SPI serial clock Config cd\n", data[1]); +#endif + devpriv->serial_hw_mode = 1; + devpriv->dio_control |= DIO_HW_Serial_Enable; + + if (data[1] == SERIAL_DISABLED) { + devpriv->serial_hw_mode = 0; + devpriv->dio_control &= ~(DIO_HW_Serial_Enable | + DIO_Software_Serial_Control); + data[1] = SERIAL_DISABLED; + devpriv->serial_interval_ns = data[1]; + } else if (data[1] <= SERIAL_600NS) { + /* Warning: this clock speed is too fast to reliably + control SCXI. */ + devpriv->dio_control &= ~DIO_HW_Serial_Timebase; + devpriv->clock_and_fout |= Slow_Internal_Timebase; + devpriv->clock_and_fout &= ~DIO_Serial_Out_Divide_By_2; + data[1] = SERIAL_600NS; + devpriv->serial_interval_ns = data[1]; + } else if (data[1] <= SERIAL_1_2US) { + devpriv->dio_control &= ~DIO_HW_Serial_Timebase; + devpriv->clock_and_fout |= Slow_Internal_Timebase | + DIO_Serial_Out_Divide_By_2; + data[1] = SERIAL_1_2US; + devpriv->serial_interval_ns = data[1]; + } else if (data[1] <= SERIAL_10US) { + devpriv->dio_control |= DIO_HW_Serial_Timebase; + devpriv->clock_and_fout |= Slow_Internal_Timebase | + DIO_Serial_Out_Divide_By_2; + /* Note: DIO_Serial_Out_Divide_By_2 only affects + 600ns/1.2us. If you turn divide_by_2 off with the + slow clock, you will still get 10us, except then + all your delays are wrong. */ + data[1] = SERIAL_10US; + devpriv->serial_interval_ns = data[1]; + } else { + devpriv->dio_control &= ~(DIO_HW_Serial_Enable | + DIO_Software_Serial_Control); + devpriv->serial_hw_mode = 0; + data[1] = (data[1] / 1000) * 1000; + devpriv->serial_interval_ns = data[1]; + } + + devpriv->stc_writew(dev, devpriv->dio_control, + DIO_Control_Register); + devpriv->stc_writew(dev, devpriv->clock_and_fout, + Clock_and_FOUT_Register); + return 1; + + break; + + case INSN_CONFIG_BIDIRECTIONAL_DATA: + + if (devpriv->serial_interval_ns == 0) { + return -EINVAL; + } + + byte_out = data[1] & 0xFF; + + if (devpriv->serial_hw_mode) { + err = ni_serial_hw_readwrite8(dev, s, byte_out, + &byte_in); + } else if (devpriv->serial_interval_ns > 0) { + err = ni_serial_sw_readwrite8(dev, s, byte_out, + &byte_in); + } else { + rt_printk("ni_serial_insn_config: serial disabled!\n"); + return -EINVAL; + } + if (err < 0) + return err; + data[1] = byte_in & 0xFF; + return insn->n; + + break; + default: + return -EINVAL; + } + +} + +static int ni_serial_hw_readwrite8(struct comedi_device * dev, struct comedi_subdevice * s, + unsigned char data_out, unsigned char *data_in) +{ + unsigned int status1; + int err = 0, count = 20; + +#ifdef DEBUG_DIO + rt_printk("ni_serial_hw_readwrite8: outputting 0x%x\n", data_out); +#endif + + devpriv->dio_output &= ~DIO_Serial_Data_Mask; + devpriv->dio_output |= DIO_Serial_Data_Out(data_out); + devpriv->stc_writew(dev, devpriv->dio_output, DIO_Output_Register); + + status1 = devpriv->stc_readw(dev, Joint_Status_1_Register); + if (status1 & DIO_Serial_IO_In_Progress_St) { + err = -EBUSY; + goto Error; + } + + devpriv->dio_control |= DIO_HW_Serial_Start; + devpriv->stc_writew(dev, devpriv->dio_control, DIO_Control_Register); + devpriv->dio_control &= ~DIO_HW_Serial_Start; + + /* Wait until STC says we're done, but don't loop infinitely. */ + while ((status1 = + devpriv->stc_readw(dev, + Joint_Status_1_Register)) & + DIO_Serial_IO_In_Progress_St) { + /* Delay one bit per loop */ + comedi_udelay((devpriv->serial_interval_ns + 999) / 1000); + if (--count < 0) { + rt_printk + ("ni_serial_hw_readwrite8: SPI serial I/O didn't finish in time!\n"); + err = -ETIME; + goto Error; + } + } + + /* Delay for last bit. This delay is absolutely necessary, because + DIO_Serial_IO_In_Progress_St goes high one bit too early. */ + comedi_udelay((devpriv->serial_interval_ns + 999) / 1000); + + if (data_in != NULL) { + *data_in = devpriv->stc_readw(dev, DIO_Serial_Input_Register); +#ifdef DEBUG_DIO + rt_printk("ni_serial_hw_readwrite8: inputted 0x%x\n", *data_in); +#endif + } + + Error: + devpriv->stc_writew(dev, devpriv->dio_control, DIO_Control_Register); + + return err; +} + +static int ni_serial_sw_readwrite8(struct comedi_device * dev, struct comedi_subdevice * s, + unsigned char data_out, unsigned char *data_in) +{ + unsigned char mask, input = 0; + +#ifdef DEBUG_DIO + rt_printk("ni_serial_sw_readwrite8: outputting 0x%x\n", data_out); +#endif + + /* Wait for one bit before transfer */ + comedi_udelay((devpriv->serial_interval_ns + 999) / 1000); + + for (mask = 0x80; mask; mask >>= 1) { + /* Output current bit; note that we cannot touch s->state + because it is a per-subdevice field, and serial is + a separate subdevice from DIO. */ + devpriv->dio_output &= ~DIO_SDOUT; + if (data_out & mask) { + devpriv->dio_output |= DIO_SDOUT; + } + devpriv->stc_writew(dev, devpriv->dio_output, + DIO_Output_Register); + + /* Assert SDCLK (active low, inverted), wait for half of + the delay, deassert SDCLK, and wait for the other half. */ + devpriv->dio_control |= DIO_Software_Serial_Control; + devpriv->stc_writew(dev, devpriv->dio_control, + DIO_Control_Register); + + comedi_udelay((devpriv->serial_interval_ns + 999) / 2000); + + devpriv->dio_control &= ~DIO_Software_Serial_Control; + devpriv->stc_writew(dev, devpriv->dio_control, + DIO_Control_Register); + + comedi_udelay((devpriv->serial_interval_ns + 999) / 2000); + + /* Input current bit */ + if (devpriv->stc_readw(dev, + DIO_Parallel_Input_Register) & DIO_SDIN) { +/* rt_printk("DIO_P_I_R: 0x%x\n", devpriv->stc_readw(dev, DIO_Parallel_Input_Register)); */ + input |= mask; + } + } +#ifdef DEBUG_DIO + rt_printk("ni_serial_sw_readwrite8: inputted 0x%x\n", input); +#endif + if (data_in) + *data_in = input; + + return 0; +} + +static void mio_common_detach(struct comedi_device * dev) +{ + if (dev->private) { + if (devpriv->counter_dev) { + ni_gpct_device_destroy(devpriv->counter_dev); + } + } + if (dev->subdevices && boardtype.has_8255) + subdev_8255_cleanup(dev, dev->subdevices + NI_8255_DIO_SUBDEV); +} + +static void init_ao_67xx(struct comedi_device * dev, struct comedi_subdevice * s) +{ + int i; + + for (i = 0; i < s->n_chan; i++) + { + ni_ao_win_outw(dev, AO_Channel(i) | 0x0, + AO_Configuration_2_67xx); + } + ao_win_out(0x0, AO_Later_Single_Point_Updates); +} + +static unsigned ni_gpct_to_stc_register(enum ni_gpct_register reg) +{ + unsigned stc_register; + switch (reg) { + case NITIO_G0_Autoincrement_Reg: + stc_register = G_Autoincrement_Register(0); + break; + case NITIO_G1_Autoincrement_Reg: + stc_register = G_Autoincrement_Register(1); + break; + case NITIO_G0_Command_Reg: + stc_register = G_Command_Register(0); + break; + case NITIO_G1_Command_Reg: + stc_register = G_Command_Register(1); + break; + case NITIO_G0_HW_Save_Reg: + stc_register = G_HW_Save_Register(0); + break; + case NITIO_G1_HW_Save_Reg: + stc_register = G_HW_Save_Register(1); + break; + case NITIO_G0_SW_Save_Reg: + stc_register = G_Save_Register(0); + break; + case NITIO_G1_SW_Save_Reg: + stc_register = G_Save_Register(1); + break; + case NITIO_G0_Mode_Reg: + stc_register = G_Mode_Register(0); + break; + case NITIO_G1_Mode_Reg: + stc_register = G_Mode_Register(1); + break; + case NITIO_G0_LoadA_Reg: + stc_register = G_Load_A_Register(0); + break; + case NITIO_G1_LoadA_Reg: + stc_register = G_Load_A_Register(1); + break; + case NITIO_G0_LoadB_Reg: + stc_register = G_Load_B_Register(0); + break; + case NITIO_G1_LoadB_Reg: + stc_register = G_Load_B_Register(1); + break; + case NITIO_G0_Input_Select_Reg: + stc_register = G_Input_Select_Register(0); + break; + case NITIO_G1_Input_Select_Reg: + stc_register = G_Input_Select_Register(1); + break; + case NITIO_G01_Status_Reg: + stc_register = G_Status_Register; + break; + case NITIO_G01_Joint_Reset_Reg: + stc_register = Joint_Reset_Register; + break; + case NITIO_G01_Joint_Status1_Reg: + stc_register = Joint_Status_1_Register; + break; + case NITIO_G01_Joint_Status2_Reg: + stc_register = Joint_Status_2_Register; + break; + case NITIO_G0_Interrupt_Acknowledge_Reg: + stc_register = Interrupt_A_Ack_Register; + break; + case NITIO_G1_Interrupt_Acknowledge_Reg: + stc_register = Interrupt_B_Ack_Register; + break; + case NITIO_G0_Status_Reg: + stc_register = AI_Status_1_Register; + break; + case NITIO_G1_Status_Reg: + stc_register = AO_Status_1_Register; + break; + case NITIO_G0_Interrupt_Enable_Reg: + stc_register = Interrupt_A_Enable_Register; + break; + case NITIO_G1_Interrupt_Enable_Reg: + stc_register = Interrupt_B_Enable_Register; + break; + default: + rt_printk("%s: unhandled register 0x%x in switch.\n", + __FUNCTION__, reg); + BUG(); + return 0; + break; + } + return stc_register; +} + +static void ni_gpct_write_register(struct ni_gpct *counter, unsigned bits, + enum ni_gpct_register reg) +{ + struct comedi_device *dev = counter->counter_dev->dev; + unsigned stc_register; + /* bits in the join reset register which are relevant to counters */ + static const unsigned gpct_joint_reset_mask = G0_Reset | G1_Reset; + static const unsigned gpct_interrupt_a_enable_mask = + G0_Gate_Interrupt_Enable | G0_TC_Interrupt_Enable; + static const unsigned gpct_interrupt_b_enable_mask = + G1_Gate_Interrupt_Enable | G1_TC_Interrupt_Enable; + + switch (reg) { + /* m-series-only registers */ + case NITIO_G0_Counting_Mode_Reg: + ni_writew(bits, M_Offset_G0_Counting_Mode); + break; + case NITIO_G1_Counting_Mode_Reg: + ni_writew(bits, M_Offset_G1_Counting_Mode); + break; + case NITIO_G0_Second_Gate_Reg: + ni_writew(bits, M_Offset_G0_Second_Gate); + break; + case NITIO_G1_Second_Gate_Reg: + ni_writew(bits, M_Offset_G1_Second_Gate); + break; + case NITIO_G0_DMA_Config_Reg: + ni_writew(bits, M_Offset_G0_DMA_Config); + break; + case NITIO_G1_DMA_Config_Reg: + ni_writew(bits, M_Offset_G1_DMA_Config); + break; + case NITIO_G0_ABZ_Reg: + ni_writew(bits, M_Offset_G0_MSeries_ABZ); + break; + case NITIO_G1_ABZ_Reg: + ni_writew(bits, M_Offset_G1_MSeries_ABZ); + break; + + /* 32 bit registers */ + case NITIO_G0_LoadA_Reg: + case NITIO_G1_LoadA_Reg: + case NITIO_G0_LoadB_Reg: + case NITIO_G1_LoadB_Reg: + stc_register = ni_gpct_to_stc_register(reg); + devpriv->stc_writel(dev, bits, stc_register); + break; + + /* 16 bit registers */ + case NITIO_G0_Interrupt_Enable_Reg: + BUG_ON(bits & ~gpct_interrupt_a_enable_mask); + ni_set_bitfield(dev, Interrupt_A_Enable_Register, + gpct_interrupt_a_enable_mask, bits); + break; + case NITIO_G1_Interrupt_Enable_Reg: + BUG_ON(bits & ~gpct_interrupt_b_enable_mask); + ni_set_bitfield(dev, Interrupt_B_Enable_Register, + gpct_interrupt_b_enable_mask, bits); + break; + case NITIO_G01_Joint_Reset_Reg: + BUG_ON(bits & ~gpct_joint_reset_mask); + /* fall-through */ + default: + stc_register = ni_gpct_to_stc_register(reg); + devpriv->stc_writew(dev, bits, stc_register); + } +} + +static unsigned ni_gpct_read_register(struct ni_gpct *counter, + enum ni_gpct_register reg) +{ + struct comedi_device *dev = counter->counter_dev->dev; + unsigned stc_register; + switch (reg) { + /* m-series only registers */ + case NITIO_G0_DMA_Status_Reg: + return ni_readw(M_Offset_G0_DMA_Status); + break; + case NITIO_G1_DMA_Status_Reg: + return ni_readw(M_Offset_G1_DMA_Status); + break; + + /* 32 bit registers */ + case NITIO_G0_HW_Save_Reg: + case NITIO_G1_HW_Save_Reg: + case NITIO_G0_SW_Save_Reg: + case NITIO_G1_SW_Save_Reg: + stc_register = ni_gpct_to_stc_register(reg); + return devpriv->stc_readl(dev, stc_register); + break; + + /* 16 bit registers */ + default: + stc_register = ni_gpct_to_stc_register(reg); + return devpriv->stc_readw(dev, stc_register); + break; + } + return 0; +} + +static int ni_freq_out_insn_read(struct comedi_device * dev, + struct comedi_subdevice * s, struct comedi_insn * insn, unsigned int * data) +{ + data[0] = devpriv->clock_and_fout & FOUT_Divider_mask; + return 1; +} + +static int ni_freq_out_insn_write(struct comedi_device * dev, + struct comedi_subdevice * s, struct comedi_insn * insn, unsigned int * data) +{ + devpriv->clock_and_fout &= ~FOUT_Enable; + devpriv->stc_writew(dev, devpriv->clock_and_fout, + Clock_and_FOUT_Register); + devpriv->clock_and_fout &= ~FOUT_Divider_mask; + devpriv->clock_and_fout |= FOUT_Divider(data[0]); + devpriv->clock_and_fout |= FOUT_Enable; + devpriv->stc_writew(dev, devpriv->clock_and_fout, + Clock_and_FOUT_Register); + return insn->n; +} + +static int ni_set_freq_out_clock(struct comedi_device * dev, unsigned int clock_source) +{ + switch (clock_source) { + case NI_FREQ_OUT_TIMEBASE_1_DIV_2_CLOCK_SRC: + devpriv->clock_and_fout &= ~FOUT_Timebase_Select; + break; + case NI_FREQ_OUT_TIMEBASE_2_CLOCK_SRC: + devpriv->clock_and_fout |= FOUT_Timebase_Select; + break; + default: + return -EINVAL; + } + devpriv->stc_writew(dev, devpriv->clock_and_fout, + Clock_and_FOUT_Register); + return 3; +} + +static void ni_get_freq_out_clock(struct comedi_device * dev, unsigned int * clock_source, + unsigned int * clock_period_ns) +{ + if (devpriv->clock_and_fout & FOUT_Timebase_Select) { + *clock_source = NI_FREQ_OUT_TIMEBASE_2_CLOCK_SRC; + *clock_period_ns = TIMEBASE_2_NS; + } else { + *clock_source = NI_FREQ_OUT_TIMEBASE_1_DIV_2_CLOCK_SRC; + *clock_period_ns = TIMEBASE_1_NS * 2; + } +} + +static int ni_freq_out_insn_config(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + switch (data[0]) { + case INSN_CONFIG_SET_CLOCK_SRC: + return ni_set_freq_out_clock(dev, data[1]); + break; + case INSN_CONFIG_GET_CLOCK_SRC: + ni_get_freq_out_clock(dev, &data[1], &data[2]); + return 3; + default: + break; + } + return -EINVAL; +} + +static int ni_alloc_private(struct comedi_device * dev) +{ + int ret; + + ret = alloc_private(dev, sizeof(ni_private)); + if (ret < 0) + return ret; + + spin_lock_init(&devpriv->window_lock); + spin_lock_init(&devpriv->soft_reg_copy_lock); + spin_lock_init(&devpriv->mite_channel_lock); + + return 0; +}; + +static int ni_E_init(struct comedi_device * dev, struct comedi_devconfig * it) +{ + struct comedi_subdevice *s; + unsigned j; + enum ni_gpct_variant counter_variant; + + if (boardtype.n_aochan > MAX_N_AO_CHAN) { + printk("bug! boardtype.n_aochan > MAX_N_AO_CHAN\n"); + return -EINVAL; + } + + if (alloc_subdevices(dev, NI_NUM_SUBDEVICES) < 0) + return -ENOMEM; + + /* analog input subdevice */ + + s = dev->subdevices + NI_AI_SUBDEV; + dev->read_subdev = s; + if (boardtype.n_adchan) { + s->type = COMEDI_SUBD_AI; + s->subdev_flags = + SDF_READABLE | SDF_DIFF | SDF_DITHER | SDF_CMD_READ; + if (boardtype.reg_type != ni_reg_611x) + s->subdev_flags |= SDF_GROUND | SDF_COMMON | SDF_OTHER; + if (boardtype.adbits > 16) + s->subdev_flags |= SDF_LSAMPL; + if (boardtype.reg_type & ni_reg_m_series_mask) + s->subdev_flags |= SDF_SOFT_CALIBRATED; + s->n_chan = boardtype.n_adchan; + s->len_chanlist = 512; + s->maxdata = (1 << boardtype.adbits) - 1; + s->range_table = ni_range_lkup[boardtype.gainlkup]; + s->insn_read = &ni_ai_insn_read; + s->insn_config = &ni_ai_insn_config; + s->do_cmdtest = &ni_ai_cmdtest; + s->do_cmd = &ni_ai_cmd; + s->cancel = &ni_ai_reset; + s->poll = &ni_ai_poll; + s->munge = &ni_ai_munge; +#ifdef PCIDMA + s->async_dma_dir = DMA_FROM_DEVICE; +#endif + } else { + s->type = COMEDI_SUBD_UNUSED; + } + + /* analog output subdevice */ + + s = dev->subdevices + NI_AO_SUBDEV; + if (boardtype.n_aochan) { + s->type = COMEDI_SUBD_AO; + s->subdev_flags = SDF_WRITABLE | SDF_DEGLITCH | SDF_GROUND; + if (boardtype.reg_type & ni_reg_m_series_mask) + s->subdev_flags |= SDF_SOFT_CALIBRATED; + s->n_chan = boardtype.n_aochan; + s->maxdata = (1 << boardtype.aobits) - 1; + s->range_table = boardtype.ao_range_table; + s->insn_read = &ni_ao_insn_read; + if (boardtype.reg_type & ni_reg_6xxx_mask) { + s->insn_write = &ni_ao_insn_write_671x; + } else { + s->insn_write = &ni_ao_insn_write; + } + s->insn_config = &ni_ao_insn_config; +#ifdef PCIDMA + if (boardtype.n_aochan) { + s->async_dma_dir = DMA_TO_DEVICE; +#else + if (boardtype.ao_fifo_depth) { +#endif + dev->write_subdev = s; + s->subdev_flags |= SDF_CMD_WRITE; + s->do_cmd = &ni_ao_cmd; + s->do_cmdtest = &ni_ao_cmdtest; + s->len_chanlist = boardtype.n_aochan; + if ((boardtype.reg_type & ni_reg_m_series_mask) == 0) + s->munge = ni_ao_munge; + } + s->cancel = &ni_ao_reset; + } else { + s->type = COMEDI_SUBD_UNUSED; + } + if ((boardtype.reg_type & ni_reg_67xx_mask)) + init_ao_67xx(dev, s); + + /* digital i/o subdevice */ + + s = dev->subdevices + NI_DIO_SUBDEV; + s->type = COMEDI_SUBD_DIO; + s->subdev_flags = SDF_WRITABLE | SDF_READABLE; + s->maxdata = 1; + s->io_bits = 0; /* all bits input */ + s->range_table = &range_digital; + s->n_chan = boardtype.num_p0_dio_channels; + if (boardtype.reg_type & ni_reg_m_series_mask) { + s->subdev_flags |= + SDF_LSAMPL | SDF_CMD_WRITE /* | SDF_CMD_READ */ ; + s->insn_bits = &ni_m_series_dio_insn_bits; + s->insn_config = &ni_m_series_dio_insn_config; + s->do_cmd = &ni_cdio_cmd; + s->do_cmdtest = &ni_cdio_cmdtest; + s->cancel = &ni_cdio_cancel; + s->async_dma_dir = DMA_BIDIRECTIONAL; + s->len_chanlist = s->n_chan; + + ni_writel(CDO_Reset_Bit | CDI_Reset_Bit, M_Offset_CDIO_Command); + ni_writel(s->io_bits, M_Offset_DIO_Direction); + } else { + s->insn_bits = &ni_dio_insn_bits; + s->insn_config = &ni_dio_insn_config; + devpriv->dio_control = DIO_Pins_Dir(s->io_bits); + ni_writew(devpriv->dio_control, DIO_Control_Register); + } + + /* 8255 device */ + s = dev->subdevices + NI_8255_DIO_SUBDEV; + if (boardtype.has_8255) { + subdev_8255_init(dev, s, ni_8255_callback, (unsigned long)dev); + } else { + s->type = COMEDI_SUBD_UNUSED; + } + + /* formerly general purpose counter/timer device, but no longer used */ + s = dev->subdevices + NI_UNUSED_SUBDEV; + s->type = COMEDI_SUBD_UNUSED; + + /* calibration subdevice -- ai and ao */ + s = dev->subdevices + NI_CALIBRATION_SUBDEV; + s->type = COMEDI_SUBD_CALIB; + if (boardtype.reg_type & ni_reg_m_series_mask) { + // internal PWM analog output used for AI nonlinearity calibration + s->subdev_flags = SDF_INTERNAL; + s->insn_config = &ni_m_series_pwm_config; + s->n_chan = 1; + s->maxdata = 0; + ni_writel(0x0, M_Offset_Cal_PWM); + } else if (boardtype.reg_type == ni_reg_6143) { + // internal PWM analog output used for AI nonlinearity calibration + s->subdev_flags = SDF_INTERNAL; + s->insn_config = &ni_6143_pwm_config; + s->n_chan = 1; + s->maxdata = 0; + } else { + s->subdev_flags = SDF_WRITABLE | SDF_INTERNAL; + s->insn_read = &ni_calib_insn_read; + s->insn_write = &ni_calib_insn_write; + caldac_setup(dev, s); + } + + /* EEPROM */ + s = dev->subdevices + NI_EEPROM_SUBDEV; + s->type = COMEDI_SUBD_MEMORY; + s->subdev_flags = SDF_READABLE | SDF_INTERNAL; + s->maxdata = 0xff; + if (boardtype.reg_type & ni_reg_m_series_mask) { + s->n_chan = M_SERIES_EEPROM_SIZE; + s->insn_read = &ni_m_series_eeprom_insn_read; + } else { + s->n_chan = 512; + s->insn_read = &ni_eeprom_insn_read; + } + + /* PFI */ + s = dev->subdevices + NI_PFI_DIO_SUBDEV; + s->type = COMEDI_SUBD_DIO; + s->subdev_flags = SDF_READABLE | SDF_WRITABLE | SDF_INTERNAL; + if (boardtype.reg_type & ni_reg_m_series_mask) { + unsigned i; + s->n_chan = 16; + ni_writew(s->state, M_Offset_PFI_DO); + for (i = 0; i < NUM_PFI_OUTPUT_SELECT_REGS; ++i) { + ni_writew(devpriv->pfi_output_select_reg[i], + M_Offset_PFI_Output_Select(i + 1)); + } + } else { + s->n_chan = 10; + } + s->maxdata = 1; + if (boardtype.reg_type & ni_reg_m_series_mask) { + s->insn_bits = &ni_pfi_insn_bits; + } + s->insn_config = &ni_pfi_insn_config; + ni_set_bits(dev, IO_Bidirection_Pin_Register, ~0, 0); + + /* cs5529 calibration adc */ + s = dev->subdevices + NI_CS5529_CALIBRATION_SUBDEV; + if (boardtype.reg_type & ni_reg_67xx_mask) { + s->type = COMEDI_SUBD_AI; + s->subdev_flags = SDF_READABLE | SDF_DIFF | SDF_INTERNAL; + // one channel for each analog output channel + s->n_chan = boardtype.n_aochan; + s->maxdata = (1 << 16) - 1; + s->range_table = &range_unknown; /* XXX */ + s->insn_read = cs5529_ai_insn_read; + s->insn_config = NULL; + init_cs5529(dev); + } else { + s->type = COMEDI_SUBD_UNUSED; + } + + /* Serial */ + s = dev->subdevices + NI_SERIAL_SUBDEV; + s->type = COMEDI_SUBD_SERIAL; + s->subdev_flags = SDF_READABLE | SDF_WRITABLE | SDF_INTERNAL; + s->n_chan = 1; + s->maxdata = 0xff; + s->insn_config = ni_serial_insn_config; + devpriv->serial_interval_ns = 0; + devpriv->serial_hw_mode = 0; + + /* RTSI */ + s = dev->subdevices + NI_RTSI_SUBDEV; + s->type = COMEDI_SUBD_DIO; + s->subdev_flags = SDF_READABLE | SDF_WRITABLE | SDF_INTERNAL; + s->n_chan = 8; + s->maxdata = 1; + s->insn_bits = ni_rtsi_insn_bits; + s->insn_config = ni_rtsi_insn_config; + ni_rtsi_init(dev); + + if (boardtype.reg_type & ni_reg_m_series_mask) { + counter_variant = ni_gpct_variant_m_series; + } else { + counter_variant = ni_gpct_variant_e_series; + } + devpriv->counter_dev = ni_gpct_device_construct(dev, + &ni_gpct_write_register, &ni_gpct_read_register, + counter_variant, NUM_GPCT); + /* General purpose counters */ + for (j = 0; j < NUM_GPCT; ++j) { + s = dev->subdevices + NI_GPCT_SUBDEV(j); + s->type = COMEDI_SUBD_COUNTER; + s->subdev_flags = + SDF_READABLE | SDF_WRITABLE | SDF_LSAMPL | SDF_CMD_READ + /* | SDF_CMD_WRITE */ ; + s->n_chan = 3; + if (boardtype.reg_type & ni_reg_m_series_mask) + s->maxdata = 0xffffffff; + else + s->maxdata = 0xffffff; + s->insn_read = &ni_gpct_insn_read; + s->insn_write = &ni_gpct_insn_write; + s->insn_config = &ni_gpct_insn_config; + s->do_cmd = &ni_gpct_cmd; + s->len_chanlist = 1; + s->do_cmdtest = &ni_gpct_cmdtest; + s->cancel = &ni_gpct_cancel; + s->async_dma_dir = DMA_BIDIRECTIONAL; + s->private = &devpriv->counter_dev->counters[j]; + + devpriv->counter_dev->counters[j].chip_index = 0; + devpriv->counter_dev->counters[j].counter_index = j; + ni_tio_init_counter(&devpriv->counter_dev->counters[j]); + } + + /* Frequency output */ + s = dev->subdevices + NI_FREQ_OUT_SUBDEV; + s->type = COMEDI_SUBD_COUNTER; + s->subdev_flags = SDF_READABLE | SDF_WRITABLE; + s->n_chan = 1; + s->maxdata = 0xf; + s->insn_read = &ni_freq_out_insn_read; + s->insn_write = &ni_freq_out_insn_write; + s->insn_config = &ni_freq_out_insn_config; + + /* ai configuration */ + ni_ai_reset(dev, dev->subdevices + NI_AI_SUBDEV); + if ((boardtype.reg_type & ni_reg_6xxx_mask) == 0) { + // BEAM is this needed for PCI-6143 ?? + devpriv->clock_and_fout = + Slow_Internal_Time_Divide_By_2 | + Slow_Internal_Timebase | + Clock_To_Board_Divide_By_2 | + Clock_To_Board | + AI_Output_Divide_By_2 | AO_Output_Divide_By_2; + } else { + devpriv->clock_and_fout = + Slow_Internal_Time_Divide_By_2 | + Slow_Internal_Timebase | + Clock_To_Board_Divide_By_2 | Clock_To_Board; + } + devpriv->stc_writew(dev, devpriv->clock_and_fout, + Clock_and_FOUT_Register); + + /* analog output configuration */ + ni_ao_reset(dev, dev->subdevices + NI_AO_SUBDEV); + + if (dev->irq) { + devpriv->stc_writew(dev, + (IRQ_POLARITY ? Interrupt_Output_Polarity : 0) | + (Interrupt_Output_On_3_Pins & 0) | Interrupt_A_Enable | + Interrupt_B_Enable | + Interrupt_A_Output_Select(interrupt_pin(dev-> + irq)) | + Interrupt_B_Output_Select(interrupt_pin(dev->irq)), + Interrupt_Control_Register); + } + + /* DMA setup */ + ni_writeb(devpriv->ai_ao_select_reg, AI_AO_Select); + ni_writeb(devpriv->g0_g1_select_reg, G0_G1_Select); + + if (boardtype.reg_type & ni_reg_6xxx_mask) { + ni_writeb(0, Magic_611x); + } else if (boardtype.reg_type & ni_reg_m_series_mask) { + int channel; + for (channel = 0; channel < boardtype.n_aochan; ++channel) { + ni_writeb(0xf, M_Offset_AO_Waveform_Order(channel)); + ni_writeb(0x0, + M_Offset_AO_Reference_Attenuation(channel)); + } + ni_writeb(0x0, M_Offset_AO_Calibration); + } + + printk("\n"); + return 0; +} + +static int ni_8255_callback(int dir, int port, int data, unsigned long arg) +{ + struct comedi_device *dev = (struct comedi_device *) arg; + + if (dir) { + ni_writeb(data, Port_A + 2 * port); + return 0; + } else { + return ni_readb(Port_A + 2 * port); + } +} + +/* + presents the EEPROM as a subdevice +*/ + +static int ni_eeprom_insn_read(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + data[0] = ni_read_eeprom(dev, CR_CHAN(insn->chanspec)); + + return 1; +} + +/* + reads bytes out of eeprom +*/ + +static int ni_read_eeprom(struct comedi_device * dev, int addr) +{ + int bit; + int bitstring; + + bitstring = 0x0300 | ((addr & 0x100) << 3) | (addr & 0xff); + ni_writeb(0x04, Serial_Command); + for (bit = 0x8000; bit; bit >>= 1) { + ni_writeb(0x04 | ((bit & bitstring) ? 0x02 : 0), + Serial_Command); + ni_writeb(0x05 | ((bit & bitstring) ? 0x02 : 0), + Serial_Command); + } + bitstring = 0; + for (bit = 0x80; bit; bit >>= 1) { + ni_writeb(0x04, Serial_Command); + ni_writeb(0x05, Serial_Command); + bitstring |= ((ni_readb(XXX_Status) & PROMOUT) ? bit : 0); + } + ni_writeb(0x00, Serial_Command); + + return bitstring; +} + +static int ni_m_series_eeprom_insn_read(struct comedi_device * dev, + struct comedi_subdevice * s, struct comedi_insn * insn, unsigned int * data) +{ + data[0] = devpriv->eeprom_buffer[CR_CHAN(insn->chanspec)]; + + return 1; +} + +static int ni_get_pwm_config(struct comedi_device * dev, unsigned int * data) +{ + data[1] = devpriv->pwm_up_count * devpriv->clock_ns; + data[2] = devpriv->pwm_down_count * devpriv->clock_ns; + return 3; +} + +static int ni_m_series_pwm_config(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + unsigned up_count, down_count; + switch (data[0]) { + case INSN_CONFIG_PWM_OUTPUT: + switch (data[1]) { + case TRIG_ROUND_NEAREST: + up_count = + (data[2] + + devpriv->clock_ns / 2) / devpriv->clock_ns; + break; + case TRIG_ROUND_DOWN: + up_count = data[2] / devpriv->clock_ns; + break; + case TRIG_ROUND_UP: + up_count = + (data[2] + devpriv->clock_ns - + 1) / devpriv->clock_ns; + break; + default: + return -EINVAL; + break; + } + switch (data[3]) { + case TRIG_ROUND_NEAREST: + down_count = + (data[4] + + devpriv->clock_ns / 2) / devpriv->clock_ns; + break; + case TRIG_ROUND_DOWN: + down_count = data[4] / devpriv->clock_ns; + break; + case TRIG_ROUND_UP: + down_count = + (data[4] + devpriv->clock_ns - + 1) / devpriv->clock_ns; + break; + default: + return -EINVAL; + break; + } + if (up_count * devpriv->clock_ns != data[2] || + down_count * devpriv->clock_ns != data[4]) { + data[2] = up_count * devpriv->clock_ns; + data[4] = down_count * devpriv->clock_ns; + return -EAGAIN; + } + ni_writel(MSeries_Cal_PWM_High_Time_Bits(up_count) | + MSeries_Cal_PWM_Low_Time_Bits(down_count), + M_Offset_Cal_PWM); + devpriv->pwm_up_count = up_count; + devpriv->pwm_down_count = down_count; + return 5; + break; + case INSN_CONFIG_GET_PWM_OUTPUT: + return ni_get_pwm_config(dev, data); + break; + default: + return -EINVAL; + break; + } + return 0; +} + +static int ni_6143_pwm_config(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + unsigned up_count, down_count; + switch (data[0]) { + case INSN_CONFIG_PWM_OUTPUT: + switch (data[1]) { + case TRIG_ROUND_NEAREST: + up_count = + (data[2] + + devpriv->clock_ns / 2) / devpriv->clock_ns; + break; + case TRIG_ROUND_DOWN: + up_count = data[2] / devpriv->clock_ns; + break; + case TRIG_ROUND_UP: + up_count = + (data[2] + devpriv->clock_ns - + 1) / devpriv->clock_ns; + break; + default: + return -EINVAL; + break; + } + switch (data[3]) { + case TRIG_ROUND_NEAREST: + down_count = + (data[4] + + devpriv->clock_ns / 2) / devpriv->clock_ns; + break; + case TRIG_ROUND_DOWN: + down_count = data[4] / devpriv->clock_ns; + break; + case TRIG_ROUND_UP: + down_count = + (data[4] + devpriv->clock_ns - + 1) / devpriv->clock_ns; + break; + default: + return -EINVAL; + break; + } + if (up_count * devpriv->clock_ns != data[2] || + down_count * devpriv->clock_ns != data[4]) { + data[2] = up_count * devpriv->clock_ns; + data[4] = down_count * devpriv->clock_ns; + return -EAGAIN; + } + ni_writel(up_count, Calibration_HighTime_6143); + devpriv->pwm_up_count = up_count; + ni_writel(down_count, Calibration_LowTime_6143); + devpriv->pwm_down_count = down_count; + return 5; + break; + case INSN_CONFIG_GET_PWM_OUTPUT: + return ni_get_pwm_config(dev, data); + default: + return -EINVAL; + break; + } + return 0; +} + +static void ni_write_caldac(struct comedi_device * dev, int addr, int val); +/* + calibration subdevice +*/ +static int ni_calib_insn_write(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + ni_write_caldac(dev, CR_CHAN(insn->chanspec), data[0]); + + return 1; +} + +static int ni_calib_insn_read(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + data[0] = devpriv->caldacs[CR_CHAN(insn->chanspec)]; + + return 1; +} + +static int pack_mb88341(int addr, int val, int *bitstring); +static int pack_dac8800(int addr, int val, int *bitstring); +static int pack_dac8043(int addr, int val, int *bitstring); +static int pack_ad8522(int addr, int val, int *bitstring); +static int pack_ad8804(int addr, int val, int *bitstring); +static int pack_ad8842(int addr, int val, int *bitstring); + +struct caldac_struct { + int n_chans; + int n_bits; + int (*packbits) (int, int, int *); +}; + +static struct caldac_struct caldacs[] = { + [mb88341] = {12, 8, pack_mb88341}, + [dac8800] = {8, 8, pack_dac8800}, + [dac8043] = {1, 12, pack_dac8043}, + [ad8522] = {2, 12, pack_ad8522}, + [ad8804] = {12, 8, pack_ad8804}, + [ad8842] = {8, 8, pack_ad8842}, + [ad8804_debug] = {16, 8, pack_ad8804}, +}; + +static void caldac_setup(struct comedi_device * dev, struct comedi_subdevice * s) +{ + int i, j; + int n_dacs; + int n_chans = 0; + int n_bits; + int diffbits = 0; + int type; + int chan; + + type = boardtype.caldac[0]; + if (type == caldac_none) + return; + n_bits = caldacs[type].n_bits; + for (i = 0; i < 3; i++) { + type = boardtype.caldac[i]; + if (type == caldac_none) + break; + if (caldacs[type].n_bits != n_bits) + diffbits = 1; + n_chans += caldacs[type].n_chans; + } + n_dacs = i; + s->n_chan = n_chans; + + if (diffbits) { + unsigned int *maxdata_list; + + if (n_chans > MAX_N_CALDACS) { + printk("BUG! MAX_N_CALDACS too small\n"); + } + s->maxdata_list = maxdata_list = devpriv->caldac_maxdata_list; + chan = 0; + for (i = 0; i < n_dacs; i++) { + type = boardtype.caldac[i]; + for (j = 0; j < caldacs[type].n_chans; j++) { + maxdata_list[chan] = + (1 << caldacs[type].n_bits) - 1; + chan++; + } + } + + for (chan = 0; chan < s->n_chan; chan++) + ni_write_caldac(dev, i, s->maxdata_list[i] / 2); + } else { + type = boardtype.caldac[0]; + s->maxdata = (1 << caldacs[type].n_bits) - 1; + + for (chan = 0; chan < s->n_chan; chan++) + ni_write_caldac(dev, i, s->maxdata / 2); + } +} + +static void ni_write_caldac(struct comedi_device * dev, int addr, int val) +{ + unsigned int loadbit = 0, bits = 0, bit, bitstring = 0; + int i; + int type; + + //printk("ni_write_caldac: chan=%d val=%d\n",addr,val); + if (devpriv->caldacs[addr] == val) + return; + devpriv->caldacs[addr] = val; + + for (i = 0; i < 3; i++) { + type = boardtype.caldac[i]; + if (type == caldac_none) + break; + if (addr < caldacs[type].n_chans) { + bits = caldacs[type].packbits(addr, val, &bitstring); + loadbit = SerDacLd(i); + //printk("caldac: using i=%d addr=%d %x\n",i,addr,bitstring); + break; + } + addr -= caldacs[type].n_chans; + } + + for (bit = 1 << (bits - 1); bit; bit >>= 1) { + ni_writeb(((bit & bitstring) ? 0x02 : 0), Serial_Command); + comedi_udelay(1); + ni_writeb(1 | ((bit & bitstring) ? 0x02 : 0), Serial_Command); + comedi_udelay(1); + } + ni_writeb(loadbit, Serial_Command); + comedi_udelay(1); + ni_writeb(0, Serial_Command); +} + +static int pack_mb88341(int addr, int val, int *bitstring) +{ + /* + Fujitsu MB 88341 + Note that address bits are reversed. Thanks to + Ingo Keen for noticing this. + + Note also that the 88341 expects address values from + 1-12, whereas we use channel numbers 0-11. The NI + docs use 1-12, also, so be careful here. + */ + addr++; + *bitstring = ((addr & 0x1) << 11) | + ((addr & 0x2) << 9) | + ((addr & 0x4) << 7) | ((addr & 0x8) << 5) | (val & 0xff); + return 12; +} + +static int pack_dac8800(int addr, int val, int *bitstring) +{ + *bitstring = ((addr & 0x7) << 8) | (val & 0xff); + return 11; +} + +static int pack_dac8043(int addr, int val, int *bitstring) +{ + *bitstring = val & 0xfff; + return 12; +} + +static int pack_ad8522(int addr, int val, int *bitstring) +{ + *bitstring = (val & 0xfff) | (addr ? 0xc000 : 0xa000); + return 16; +} + +static int pack_ad8804(int addr, int val, int *bitstring) +{ + *bitstring = ((addr & 0xf) << 8) | (val & 0xff); + return 12; +} + +static int pack_ad8842(int addr, int val, int *bitstring) +{ + *bitstring = ((addr + 1) << 8) | (val & 0xff); + return 12; +} + +#if 0 +/* + * Read the GPCTs current value. + */ +static int GPCT_G_Watch(struct comedi_device * dev, int chan) +{ + unsigned int hi1, hi2, lo; + + devpriv->gpct_command[chan] &= ~G_Save_Trace; + devpriv->stc_writew(dev, devpriv->gpct_command[chan], + G_Command_Register(chan)); + + devpriv->gpct_command[chan] |= G_Save_Trace; + devpriv->stc_writew(dev, devpriv->gpct_command[chan], + G_Command_Register(chan)); + + /* This procedure is used because the two registers cannot + * be read atomically. */ + do { + hi1 = devpriv->stc_readw(dev, G_Save_Register_High(chan)); + lo = devpriv->stc_readw(dev, G_Save_Register_Low(chan)); + hi2 = devpriv->stc_readw(dev, G_Save_Register_High(chan)); + } while (hi1 != hi2); + + return (hi1 << 16) | lo; +} + +static void GPCT_Reset(struct comedi_device * dev, int chan) +{ + int temp_ack_reg = 0; + + //printk("GPCT_Reset..."); + devpriv->gpct_cur_operation[chan] = GPCT_RESET; + + switch (chan) { + case 0: + devpriv->stc_writew(dev, G0_Reset, Joint_Reset_Register); + ni_set_bits(dev, Interrupt_A_Enable_Register, + G0_TC_Interrupt_Enable, 0); + ni_set_bits(dev, Interrupt_A_Enable_Register, + G0_Gate_Interrupt_Enable, 0); + temp_ack_reg |= G0_Gate_Error_Confirm; + temp_ack_reg |= G0_TC_Error_Confirm; + temp_ack_reg |= G0_TC_Interrupt_Ack; + temp_ack_reg |= G0_Gate_Interrupt_Ack; + devpriv->stc_writew(dev, temp_ack_reg, + Interrupt_A_Ack_Register); + + //problem...this interferes with the other ctr... + devpriv->an_trig_etc_reg |= GPFO_0_Output_Enable; + devpriv->stc_writew(dev, devpriv->an_trig_etc_reg, + Analog_Trigger_Etc_Register); + break; + case 1: + devpriv->stc_writew(dev, G1_Reset, Joint_Reset_Register); + ni_set_bits(dev, Interrupt_B_Enable_Register, + G1_TC_Interrupt_Enable, 0); + ni_set_bits(dev, Interrupt_B_Enable_Register, + G0_Gate_Interrupt_Enable, 0); + temp_ack_reg |= G1_Gate_Error_Confirm; + temp_ack_reg |= G1_TC_Error_Confirm; + temp_ack_reg |= G1_TC_Interrupt_Ack; + temp_ack_reg |= G1_Gate_Interrupt_Ack; + devpriv->stc_writew(dev, temp_ack_reg, + Interrupt_B_Ack_Register); + + devpriv->an_trig_etc_reg |= GPFO_1_Output_Enable; + devpriv->stc_writew(dev, devpriv->an_trig_etc_reg, + Analog_Trigger_Etc_Register); + break; + }; + + devpriv->gpct_mode[chan] = 0; + devpriv->gpct_input_select[chan] = 0; + devpriv->gpct_command[chan] = 0; + + devpriv->gpct_command[chan] |= G_Synchronized_Gate; + + devpriv->stc_writew(dev, devpriv->gpct_mode[chan], + G_Mode_Register(chan)); + devpriv->stc_writew(dev, devpriv->gpct_input_select[chan], + G_Input_Select_Register(chan)); + devpriv->stc_writew(dev, 0, G_Autoincrement_Register(chan)); + + //printk("exit GPCT_Reset\n"); +} + +#endif + +static int ni_gpct_insn_config(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + struct ni_gpct *counter = s->private; + return ni_tio_insn_config(counter, insn, data); +} + +static int ni_gpct_insn_read(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + struct ni_gpct *counter = s->private; + return ni_tio_rinsn(counter, insn, data); +} + +static int ni_gpct_insn_write(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + struct ni_gpct *counter = s->private; + return ni_tio_winsn(counter, insn, data); +} + +static int ni_gpct_cmd(struct comedi_device * dev, struct comedi_subdevice * s) +{ + int retval; +#ifdef PCIDMA + struct ni_gpct *counter = s->private; +// const struct comedi_cmd *cmd = &s->async->cmd; + + retval = ni_request_gpct_mite_channel(dev, counter->counter_index, + COMEDI_INPUT); + if (retval) { + comedi_error(dev, + "no dma channel available for use by counter"); + return retval; + } + ni_tio_acknowledge_and_confirm(counter, NULL, NULL, NULL, NULL); + ni_e_series_enable_second_irq(dev, counter->counter_index, 1); + retval = ni_tio_cmd(counter, s->async); +#else + retval = -ENOTSUPP; +#endif + return retval; +} + +static int ni_gpct_cmdtest(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_cmd * cmd) +{ +#ifdef PCIDMA + struct ni_gpct *counter = s->private; + + return ni_tio_cmdtest(counter, cmd); +#else + return -ENOTSUPP; +#endif +} + +static int ni_gpct_cancel(struct comedi_device * dev, struct comedi_subdevice * s) +{ +#ifdef PCIDMA + struct ni_gpct *counter = s->private; + int retval; + + retval = ni_tio_cancel(counter); + ni_e_series_enable_second_irq(dev, counter->counter_index, 0); + ni_release_gpct_mite_channel(dev, counter->counter_index); + return retval; +#else + return 0; +#endif +} + +/* + * + * Programmable Function Inputs + * + */ + +static int ni_m_series_set_pfi_routing(struct comedi_device * dev, unsigned chan, + unsigned source) +{ + unsigned pfi_reg_index; + unsigned array_offset; + if ((source & 0x1f) != source) + return -EINVAL; + pfi_reg_index = 1 + chan / 3; + array_offset = pfi_reg_index - 1; + devpriv->pfi_output_select_reg[array_offset] &= + ~MSeries_PFI_Output_Select_Mask(chan); + devpriv->pfi_output_select_reg[array_offset] |= + MSeries_PFI_Output_Select_Bits(chan, source); + ni_writew(devpriv->pfi_output_select_reg[array_offset], + M_Offset_PFI_Output_Select(pfi_reg_index)); + return 2; +} + +static int ni_old_set_pfi_routing(struct comedi_device * dev, unsigned chan, + unsigned source) +{ + // pre-m-series boards have fixed signals on pfi pins + if (source != ni_old_get_pfi_routing(dev, chan)) + return -EINVAL; + return 2; +} + +static int ni_set_pfi_routing(struct comedi_device * dev, unsigned chan, + unsigned source) +{ + if (boardtype.reg_type & ni_reg_m_series_mask) + return ni_m_series_set_pfi_routing(dev, chan, source); + else + return ni_old_set_pfi_routing(dev, chan, source); +} + +static unsigned ni_m_series_get_pfi_routing(struct comedi_device * dev, unsigned chan) +{ + const unsigned array_offset = chan / 3; + return MSeries_PFI_Output_Select_Source(chan, + devpriv->pfi_output_select_reg[array_offset]); +} + +static unsigned ni_old_get_pfi_routing(struct comedi_device * dev, unsigned chan) +{ + // pre-m-series boards have fixed signals on pfi pins + switch (chan) { + case 0: + return NI_PFI_OUTPUT_AI_START1; + break; + case 1: + return NI_PFI_OUTPUT_AI_START2; + break; + case 2: + return NI_PFI_OUTPUT_AI_CONVERT; + break; + case 3: + return NI_PFI_OUTPUT_G_SRC1; + break; + case 4: + return NI_PFI_OUTPUT_G_GATE1; + break; + case 5: + return NI_PFI_OUTPUT_AO_UPDATE_N; + break; + case 6: + return NI_PFI_OUTPUT_AO_START1; + break; + case 7: + return NI_PFI_OUTPUT_AI_START_PULSE; + break; + case 8: + return NI_PFI_OUTPUT_G_SRC0; + break; + case 9: + return NI_PFI_OUTPUT_G_GATE0; + break; + default: + rt_printk("%s: bug, unhandled case in switch.\n", __FUNCTION__); + break; + } + return 0; +} + +static unsigned ni_get_pfi_routing(struct comedi_device * dev, unsigned chan) +{ + if (boardtype.reg_type & ni_reg_m_series_mask) + return ni_m_series_get_pfi_routing(dev, chan); + else + return ni_old_get_pfi_routing(dev, chan); +} + +static int ni_config_filter(struct comedi_device * dev, unsigned pfi_channel, + enum ni_pfi_filter_select filter) +{ + unsigned bits; + if ((boardtype.reg_type & ni_reg_m_series_mask) == 0) { + return -ENOTSUPP; + } + bits = ni_readl(M_Offset_PFI_Filter); + bits &= ~MSeries_PFI_Filter_Select_Mask(pfi_channel); + bits |= MSeries_PFI_Filter_Select_Bits(pfi_channel, filter); + ni_writel(bits, M_Offset_PFI_Filter); + return 0; +} + +static int ni_pfi_insn_bits(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + if ((boardtype.reg_type & ni_reg_m_series_mask) == 0) { + return -ENOTSUPP; + } + if (data[0]) { + s->state &= ~data[0]; + s->state |= (data[0] & data[1]); + ni_writew(s->state, M_Offset_PFI_DO); + } + data[1] = ni_readw(M_Offset_PFI_DI); + return 2; +} + +static int ni_pfi_insn_config(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + unsigned int chan; + + if (insn->n < 1) + return -EINVAL; + + chan = CR_CHAN(insn->chanspec); + + switch (data[0]) { + case COMEDI_OUTPUT: + ni_set_bits(dev, IO_Bidirection_Pin_Register, 1 << chan, 1); + break; + case COMEDI_INPUT: + ni_set_bits(dev, IO_Bidirection_Pin_Register, 1 << chan, 0); + break; + case INSN_CONFIG_DIO_QUERY: + data[1] = + (devpriv-> + io_bidirection_pin_reg & (1 << chan)) ? COMEDI_OUTPUT : + COMEDI_INPUT; + return 0; + break; + case INSN_CONFIG_SET_ROUTING: + return ni_set_pfi_routing(dev, chan, data[1]); + break; + case INSN_CONFIG_GET_ROUTING: + data[1] = ni_get_pfi_routing(dev, chan); + break; + case INSN_CONFIG_FILTER: + return ni_config_filter(dev, chan, data[1]); + break; + default: + return -EINVAL; + } + return 0; +} + +/* + * + * NI RTSI Bus Functions + * + */ +static void ni_rtsi_init(struct comedi_device * dev) +{ + // Initialises the RTSI bus signal switch to a default state + + // Set clock mode to internal + devpriv->clock_and_fout2 = MSeries_RTSI_10MHz_Bit; + if (ni_set_master_clock(dev, NI_MIO_INTERNAL_CLOCK, 0) < 0) { + rt_printk("ni_set_master_clock failed, bug?"); + } + // default internal lines routing to RTSI bus lines + devpriv->rtsi_trig_a_output_reg = + RTSI_Trig_Output_Bits(0, + NI_RTSI_OUTPUT_ADR_START1) | RTSI_Trig_Output_Bits(1, + NI_RTSI_OUTPUT_ADR_START2) | RTSI_Trig_Output_Bits(2, + NI_RTSI_OUTPUT_SCLKG) | RTSI_Trig_Output_Bits(3, + NI_RTSI_OUTPUT_DACUPDN); + devpriv->stc_writew(dev, devpriv->rtsi_trig_a_output_reg, + RTSI_Trig_A_Output_Register); + devpriv->rtsi_trig_b_output_reg = + RTSI_Trig_Output_Bits(4, + NI_RTSI_OUTPUT_DA_START1) | RTSI_Trig_Output_Bits(5, + NI_RTSI_OUTPUT_G_SRC0) | RTSI_Trig_Output_Bits(6, + NI_RTSI_OUTPUT_G_GATE0); + if (boardtype.reg_type & ni_reg_m_series_mask) + devpriv->rtsi_trig_b_output_reg |= + RTSI_Trig_Output_Bits(7, NI_RTSI_OUTPUT_RTSI_OSC); + devpriv->stc_writew(dev, devpriv->rtsi_trig_b_output_reg, + RTSI_Trig_B_Output_Register); + + // Sets the source and direction of the 4 on board lines +// devpriv->stc_writew(dev, 0x0000, RTSI_Board_Register); +} + +static int ni_rtsi_insn_bits(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + if (insn->n != 2) + return -EINVAL; + + data[1] = 0; + + return 2; +} + +/* Find best multiplier/divider to try and get the PLL running at 80 MHz + * given an arbitrary frequency input clock */ +static int ni_mseries_get_pll_parameters(unsigned reference_period_ns, + unsigned *freq_divider, unsigned *freq_multiplier, + unsigned *actual_period_ns) +{ + unsigned div; + unsigned best_div = 1; + static const unsigned max_div = 0x10; + unsigned mult; + unsigned best_mult = 1; + static const unsigned max_mult = 0x100; + static const unsigned pico_per_nano = 1000; + + const unsigned reference_picosec = reference_period_ns * pico_per_nano; + /* m-series wants the phased-locked loop to output 80MHz, which is divided by 4 to + * 20 MHz for most timing clocks */ + static const unsigned target_picosec = 12500; + static const unsigned fudge_factor_80_to_20Mhz = 4; + int best_period_picosec = 0; + for (div = 1; div <= max_div; ++div) { + for (mult = 1; mult <= max_mult; ++mult) { + unsigned new_period_ps = + (reference_picosec * div) / mult; + if (abs(new_period_ps - target_picosec) < + abs(best_period_picosec - target_picosec)) { + best_period_picosec = new_period_ps; + best_div = div; + best_mult = mult; + } + } + } + if (best_period_picosec == 0) { + rt_printk("%s: bug, failed to find pll parameters\n", + __FUNCTION__); + return -EIO; + } + *freq_divider = best_div; + *freq_multiplier = best_mult; + *actual_period_ns = + (best_period_picosec * fudge_factor_80_to_20Mhz + + (pico_per_nano / 2)) / pico_per_nano; + return 0; +} + +static inline unsigned num_configurable_rtsi_channels(struct comedi_device * dev) +{ + if (boardtype.reg_type & ni_reg_m_series_mask) + return 8; + else + return 7; +} + +static int ni_mseries_set_pll_master_clock(struct comedi_device * dev, unsigned source, + unsigned period_ns) +{ + static const unsigned min_period_ns = 50; + static const unsigned max_period_ns = 1000; + static const unsigned timeout = 1000; + unsigned pll_control_bits; + unsigned freq_divider; + unsigned freq_multiplier; + unsigned i; + int retval; + if (source == NI_MIO_PLL_PXI10_CLOCK) + period_ns = 100; + // these limits are somewhat arbitrary, but NI advertises 1 to 20MHz range so we'll use that + if (period_ns < min_period_ns || period_ns > max_period_ns) { + rt_printk + ("%s: you must specify an input clock frequency between %i and %i nanosec " + "for the phased-lock loop.\n", __FUNCTION__, + min_period_ns, max_period_ns); + return -EINVAL; + } + devpriv->rtsi_trig_direction_reg &= ~Use_RTSI_Clock_Bit; + devpriv->stc_writew(dev, devpriv->rtsi_trig_direction_reg, + RTSI_Trig_Direction_Register); + pll_control_bits = + MSeries_PLL_Enable_Bit | MSeries_PLL_VCO_Mode_75_150MHz_Bits; + devpriv->clock_and_fout2 |= + MSeries_Timebase1_Select_Bit | MSeries_Timebase3_Select_Bit; + devpriv->clock_and_fout2 &= ~MSeries_PLL_In_Source_Select_Mask; + switch (source) { + case NI_MIO_PLL_PXI_STAR_TRIGGER_CLOCK: + devpriv->clock_and_fout2 |= + MSeries_PLL_In_Source_Select_Star_Trigger_Bits; + retval = ni_mseries_get_pll_parameters(period_ns, &freq_divider, + &freq_multiplier, &devpriv->clock_ns); + if (retval < 0) + return retval; + break; + case NI_MIO_PLL_PXI10_CLOCK: + /* pxi clock is 10MHz */ + devpriv->clock_and_fout2 |= + MSeries_PLL_In_Source_Select_PXI_Clock10; + retval = ni_mseries_get_pll_parameters(period_ns, &freq_divider, + &freq_multiplier, &devpriv->clock_ns); + if (retval < 0) + return retval; + break; + default: + { + unsigned rtsi_channel; + static const unsigned max_rtsi_channel = 7; + for (rtsi_channel = 0; rtsi_channel <= max_rtsi_channel; + ++rtsi_channel) { + if (source == + NI_MIO_PLL_RTSI_CLOCK(rtsi_channel)) { + devpriv->clock_and_fout2 |= + MSeries_PLL_In_Source_Select_RTSI_Bits + (rtsi_channel); + break; + } + } + if (rtsi_channel > max_rtsi_channel) + return -EINVAL; + retval = ni_mseries_get_pll_parameters(period_ns, + &freq_divider, &freq_multiplier, + &devpriv->clock_ns); + if (retval < 0) + return retval; + } + break; + } + ni_writew(devpriv->clock_and_fout2, M_Offset_Clock_and_Fout2); + pll_control_bits |= + MSeries_PLL_Divisor_Bits(freq_divider) | + MSeries_PLL_Multiplier_Bits(freq_multiplier); +// rt_printk("using divider=%i, multiplier=%i for PLL. pll_control_bits = 0x%x\n", freq_divider, freq_multiplier, pll_control_bits); +// rt_printk("clock_ns=%d\n", devpriv->clock_ns); + ni_writew(pll_control_bits, M_Offset_PLL_Control); + devpriv->clock_source = source; + /* it seems to typically take a few hundred microseconds for PLL to lock */ + for (i = 0; i < timeout; ++i) { + if (ni_readw(M_Offset_PLL_Status) & MSeries_PLL_Locked_Bit) { + break; + } + udelay(1); + } + if (i == timeout) { + rt_printk + ("%s: timed out waiting for PLL to lock to reference clock source %i with period %i ns.\n", + __FUNCTION__, source, period_ns); + return -ETIMEDOUT; + } + return 3; +} + +static int ni_set_master_clock(struct comedi_device * dev, unsigned source, + unsigned period_ns) +{ + if (source == NI_MIO_INTERNAL_CLOCK) { + devpriv->rtsi_trig_direction_reg &= ~Use_RTSI_Clock_Bit; + devpriv->stc_writew(dev, devpriv->rtsi_trig_direction_reg, + RTSI_Trig_Direction_Register); + devpriv->clock_ns = TIMEBASE_1_NS; + if (boardtype.reg_type & ni_reg_m_series_mask) { + devpriv->clock_and_fout2 &= + ~(MSeries_Timebase1_Select_Bit | + MSeries_Timebase3_Select_Bit); + ni_writew(devpriv->clock_and_fout2, + M_Offset_Clock_and_Fout2); + ni_writew(0, M_Offset_PLL_Control); + } + devpriv->clock_source = source; + } else { + if (boardtype.reg_type & ni_reg_m_series_mask) { + return ni_mseries_set_pll_master_clock(dev, source, + period_ns); + } else { + if (source == NI_MIO_RTSI_CLOCK) { + devpriv->rtsi_trig_direction_reg |= + Use_RTSI_Clock_Bit; + devpriv->stc_writew(dev, + devpriv->rtsi_trig_direction_reg, + RTSI_Trig_Direction_Register); + if (period_ns == 0) { + rt_printk + ("%s: we don't handle an unspecified clock period correctly yet, returning error.\n", + __FUNCTION__); + return -EINVAL; + } else { + devpriv->clock_ns = period_ns; + } + devpriv->clock_source = source; + } else + return -EINVAL; + } + } + return 3; +} + +static int ni_valid_rtsi_output_source(struct comedi_device * dev, unsigned chan, + unsigned source) +{ + if (chan >= num_configurable_rtsi_channels(dev)) { + if (chan == old_RTSI_clock_channel) { + if (source == NI_RTSI_OUTPUT_RTSI_OSC) + return 1; + else { + rt_printk + ("%s: invalid source for channel=%i, channel %i is always the RTSI clock for pre-m-series boards.\n", + __FUNCTION__, chan, + old_RTSI_clock_channel); + return 0; + } + } + return 0; + } + switch (source) { + case NI_RTSI_OUTPUT_ADR_START1: + case NI_RTSI_OUTPUT_ADR_START2: + case NI_RTSI_OUTPUT_SCLKG: + case NI_RTSI_OUTPUT_DACUPDN: + case NI_RTSI_OUTPUT_DA_START1: + case NI_RTSI_OUTPUT_G_SRC0: + case NI_RTSI_OUTPUT_G_GATE0: + case NI_RTSI_OUTPUT_RGOUT0: + case NI_RTSI_OUTPUT_RTSI_BRD_0: + return 1; + break; + case NI_RTSI_OUTPUT_RTSI_OSC: + if (boardtype.reg_type & ni_reg_m_series_mask) + return 1; + else + return 0; + break; + default: + return 0; + break; + } +} + +static int ni_set_rtsi_routing(struct comedi_device * dev, unsigned chan, + unsigned source) +{ + if (ni_valid_rtsi_output_source(dev, chan, source) == 0) + return -EINVAL; + if (chan < 4) { + devpriv->rtsi_trig_a_output_reg &= ~RTSI_Trig_Output_Mask(chan); + devpriv->rtsi_trig_a_output_reg |= + RTSI_Trig_Output_Bits(chan, source); + devpriv->stc_writew(dev, devpriv->rtsi_trig_a_output_reg, + RTSI_Trig_A_Output_Register); + } else if (chan < 8) { + devpriv->rtsi_trig_b_output_reg &= ~RTSI_Trig_Output_Mask(chan); + devpriv->rtsi_trig_b_output_reg |= + RTSI_Trig_Output_Bits(chan, source); + devpriv->stc_writew(dev, devpriv->rtsi_trig_b_output_reg, + RTSI_Trig_B_Output_Register); + } + return 2; +} + +static unsigned ni_get_rtsi_routing(struct comedi_device * dev, unsigned chan) +{ + if (chan < 4) { + return RTSI_Trig_Output_Source(chan, + devpriv->rtsi_trig_a_output_reg); + } else if (chan < num_configurable_rtsi_channels(dev)) { + return RTSI_Trig_Output_Source(chan, + devpriv->rtsi_trig_b_output_reg); + } else { + if (chan == old_RTSI_clock_channel) + return NI_RTSI_OUTPUT_RTSI_OSC; + rt_printk("%s: bug! should never get here?\n", __FUNCTION__); + return 0; + } +} + +static int ni_rtsi_insn_config(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + unsigned int chan = CR_CHAN(insn->chanspec); + switch (data[0]) { + case INSN_CONFIG_DIO_OUTPUT: + if (chan < num_configurable_rtsi_channels(dev)) { + devpriv->rtsi_trig_direction_reg |= + RTSI_Output_Bit(chan, + (boardtype.reg_type & ni_reg_m_series_mask) != + 0); + } else if (chan == old_RTSI_clock_channel) { + devpriv->rtsi_trig_direction_reg |= + Drive_RTSI_Clock_Bit; + } + devpriv->stc_writew(dev, devpriv->rtsi_trig_direction_reg, + RTSI_Trig_Direction_Register); + break; + case INSN_CONFIG_DIO_INPUT: + if (chan < num_configurable_rtsi_channels(dev)) { + devpriv->rtsi_trig_direction_reg &= + ~RTSI_Output_Bit(chan, + (boardtype.reg_type & ni_reg_m_series_mask) != + 0); + } else if (chan == old_RTSI_clock_channel) { + devpriv->rtsi_trig_direction_reg &= + ~Drive_RTSI_Clock_Bit; + } + devpriv->stc_writew(dev, devpriv->rtsi_trig_direction_reg, + RTSI_Trig_Direction_Register); + break; + case INSN_CONFIG_DIO_QUERY: + if (chan < num_configurable_rtsi_channels(dev)) { + data[1] = + (devpriv-> + rtsi_trig_direction_reg & RTSI_Output_Bit(chan, + (boardtype. + reg_type & ni_reg_m_series_mask) + != + 0)) ? INSN_CONFIG_DIO_OUTPUT : + INSN_CONFIG_DIO_INPUT; + } else if (chan == old_RTSI_clock_channel) { + data[1] = + (devpriv-> + rtsi_trig_direction_reg & Drive_RTSI_Clock_Bit) + ? INSN_CONFIG_DIO_OUTPUT : + INSN_CONFIG_DIO_INPUT; + } + return 2; + break; + case INSN_CONFIG_SET_CLOCK_SRC: + return ni_set_master_clock(dev, data[1], data[2]); + break; + case INSN_CONFIG_GET_CLOCK_SRC: + data[1] = devpriv->clock_source; + data[2] = devpriv->clock_ns; + return 3; + break; + case INSN_CONFIG_SET_ROUTING: + return ni_set_rtsi_routing(dev, chan, data[1]); + break; + case INSN_CONFIG_GET_ROUTING: + data[1] = ni_get_rtsi_routing(dev, chan); + return 2; + break; + default: + return -EINVAL; + break; + } + return 1; +} + +static int cs5529_wait_for_idle(struct comedi_device * dev) +{ + unsigned short status; + const int timeout = HZ; + int i; + + for (i = 0; i < timeout; i++) { + status = ni_ao_win_inw(dev, CAL_ADC_Status_67xx); + if ((status & CSS_ADC_BUSY) == 0) { + break; + } + set_current_state(TASK_INTERRUPTIBLE); + if (schedule_timeout(1)) { + return -EIO; + } + } +//printk("looped %i times waiting for idle\n", i); + if (i == timeout) { + rt_printk("%s: %s: timeout\n", __FILE__, __FUNCTION__); + return -ETIME; + } + return 0; +} + +static void cs5529_command(struct comedi_device * dev, unsigned short value) +{ + static const int timeout = 100; + int i; + + ni_ao_win_outw(dev, value, CAL_ADC_Command_67xx); + /* give time for command to start being serially clocked into cs5529. + * this insures that the CSS_ADC_BUSY bit will get properly + * set before we exit this function. + */ + for (i = 0; i < timeout; i++) { + if ((ni_ao_win_inw(dev, CAL_ADC_Status_67xx) & CSS_ADC_BUSY)) + break; + comedi_udelay(1); + } +//printk("looped %i times writing command to cs5529\n", i); + if (i == timeout) { + comedi_error(dev, "possible problem - never saw adc go busy?"); + } +} + +/* write to cs5529 register */ +static void cs5529_config_write(struct comedi_device * dev, unsigned int value, + unsigned int reg_select_bits) +{ + ni_ao_win_outw(dev, ((value >> 16) & 0xff), + CAL_ADC_Config_Data_High_Word_67xx); + ni_ao_win_outw(dev, (value & 0xffff), + CAL_ADC_Config_Data_Low_Word_67xx); + reg_select_bits &= CSCMD_REGISTER_SELECT_MASK; + cs5529_command(dev, CSCMD_COMMAND | reg_select_bits); + if (cs5529_wait_for_idle(dev)) + comedi_error(dev, "time or signal in cs5529_config_write()"); +} + +#ifdef NI_CS5529_DEBUG +/* read from cs5529 register */ +static unsigned int cs5529_config_read(struct comedi_device * dev, + unsigned int reg_select_bits) +{ + unsigned int value; + + reg_select_bits &= CSCMD_REGISTER_SELECT_MASK; + cs5529_command(dev, CSCMD_COMMAND | CSCMD_READ | reg_select_bits); + if (cs5529_wait_for_idle(dev)) + comedi_error(dev, "timeout or signal in cs5529_config_read()"); + value = (ni_ao_win_inw(dev, + CAL_ADC_Config_Data_High_Word_67xx) << 16) & 0xff0000; + value |= ni_ao_win_inw(dev, CAL_ADC_Config_Data_Low_Word_67xx) & 0xffff; + return value; +} +#endif + +static int cs5529_do_conversion(struct comedi_device * dev, unsigned short *data) +{ + int retval; + unsigned short status; + + cs5529_command(dev, CSCMD_COMMAND | CSCMD_SINGLE_CONVERSION); + retval = cs5529_wait_for_idle(dev); + if (retval) { + comedi_error(dev, + "timeout or signal in cs5529_do_conversion()"); + return -ETIME; + } + status = ni_ao_win_inw(dev, CAL_ADC_Status_67xx); + if (status & CSS_OSC_DETECT) { + rt_printk + ("ni_mio_common: cs5529 conversion error, status CSS_OSC_DETECT\n"); + return -EIO; + } + if (status & CSS_OVERRANGE) { + rt_printk + ("ni_mio_common: cs5529 conversion error, overrange (ignoring)\n"); + } + if (data) { + *data = ni_ao_win_inw(dev, CAL_ADC_Data_67xx); + /* cs5529 returns 16 bit signed data in bipolar mode */ + *data ^= (1 << 15); + } + return 0; +} + +static int cs5529_ai_insn_read(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + int n, retval; + unsigned short sample; + unsigned int channel_select; + const unsigned int INTERNAL_REF = 0x1000; + + /* Set calibration adc source. Docs lie, reference select bits 8 to 11 + * do nothing. bit 12 seems to chooses internal reference voltage, bit + * 13 causes the adc input to go overrange (maybe reads external reference?) */ + if (insn->chanspec & CR_ALT_SOURCE) + channel_select = INTERNAL_REF; + else + channel_select = CR_CHAN(insn->chanspec); + ni_ao_win_outw(dev, channel_select, AO_Calibration_Channel_Select_67xx); + + for (n = 0; n < insn->n; n++) { + retval = cs5529_do_conversion(dev, &sample); + if (retval < 0) + return retval; + data[n] = sample; + } + return insn->n; +} + +static int init_cs5529(struct comedi_device * dev) +{ + unsigned int config_bits = + CSCFG_PORT_MODE | CSCFG_WORD_RATE_2180_CYCLES; + +#if 1 + /* do self-calibration */ + cs5529_config_write(dev, config_bits | CSCFG_SELF_CAL_OFFSET_GAIN, + CSCMD_CONFIG_REGISTER); + /* need to force a conversion for calibration to run */ + cs5529_do_conversion(dev, NULL); +#else + /* force gain calibration to 1 */ + cs5529_config_write(dev, 0x400000, CSCMD_GAIN_REGISTER); + cs5529_config_write(dev, config_bits | CSCFG_SELF_CAL_OFFSET, + CSCMD_CONFIG_REGISTER); + if (cs5529_wait_for_idle(dev)) + comedi_error(dev, "timeout or signal in init_cs5529()\n"); +#endif +#ifdef NI_CS5529_DEBUG + rt_printk("config: 0x%x\n", cs5529_config_read(dev, + CSCMD_CONFIG_REGISTER)); + rt_printk("gain: 0x%x\n", cs5529_config_read(dev, + CSCMD_GAIN_REGISTER)); + rt_printk("offset: 0x%x\n", cs5529_config_read(dev, + CSCMD_OFFSET_REGISTER)); +#endif + return 0; +} |