diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/cb_pcidas64.c')
| -rw-r--r-- | drivers/staging/comedi/drivers/cb_pcidas64.c | 221 |
1 files changed, 104 insertions, 117 deletions
diff --git a/drivers/staging/comedi/drivers/cb_pcidas64.c b/drivers/staging/comedi/drivers/cb_pcidas64.c index fa12614cef2a..3b6bffc66918 100644 --- a/drivers/staging/comedi/drivers/cb_pcidas64.c +++ b/drivers/staging/comedi/drivers/cb_pcidas64.c @@ -1038,7 +1038,7 @@ static const struct pcidas64_board pcidas64_boards[] = { static inline unsigned short se_diff_bit_6xxx(struct comedi_device *dev, int use_differential) { - const struct pcidas64_board *thisboard = comedi_board(dev); + const struct pcidas64_board *thisboard = dev->board_ptr; if ((thisboard->layout == LAYOUT_64XX && !use_differential) || (thisboard->layout == LAYOUT_60XX && use_differential)) @@ -1089,8 +1089,6 @@ struct pcidas64_private { unsigned int ao_dma_index; /* number of analog output samples remaining */ unsigned long ao_count; - /* remember what the analog outputs are set to, to allow readback */ - unsigned int ao_value[2]; unsigned int hw_revision; /* stc chip hardware revision number */ /* last bits sent to INTR_ENABLE_REG register */ unsigned int intr_enable_bits; @@ -1123,7 +1121,7 @@ struct pcidas64_private { static unsigned int ai_range_bits_6xxx(const struct comedi_device *dev, unsigned int range_index) { - const struct pcidas64_board *thisboard = comedi_board(dev); + const struct pcidas64_board *thisboard = dev->board_ptr; const struct comedi_krange *range = &thisboard->ai_range_table->range[range_index]; unsigned int bits = 0; @@ -1168,7 +1166,7 @@ static unsigned int ai_range_bits_6xxx(const struct comedi_device *dev, static unsigned int hw_revision(const struct comedi_device *dev, uint16_t hw_status_bits) { - const struct pcidas64_board *thisboard = comedi_board(dev); + const struct pcidas64_board *thisboard = dev->board_ptr; if (thisboard->layout == LAYOUT_4020) return (hw_status_bits >> 13) & 0x7; @@ -1180,7 +1178,7 @@ static void set_dac_range_bits(struct comedi_device *dev, uint16_t *bits, unsigned int channel, unsigned int range) { - const struct pcidas64_board *thisboard = comedi_board(dev); + const struct pcidas64_board *thisboard = dev->board_ptr; unsigned int code = thisboard->ao_range_code[range]; if (channel > 1) @@ -1237,7 +1235,7 @@ static void disable_ai_interrupts(struct comedi_device *dev) static void enable_ai_interrupts(struct comedi_device *dev, const struct comedi_cmd *cmd) { - const struct pcidas64_board *thisboard = comedi_board(dev); + const struct pcidas64_board *thisboard = dev->board_ptr; struct pcidas64_private *devpriv = dev->private; uint32_t bits; unsigned long flags; @@ -1245,8 +1243,8 @@ static void enable_ai_interrupts(struct comedi_device *dev, bits = EN_ADC_OVERRUN_BIT | EN_ADC_DONE_INTR_BIT | EN_ADC_ACTIVE_INTR_BIT | EN_ADC_STOP_INTR_BIT; /* Use pio transfer and interrupt on end of conversion - * if TRIG_WAKE_EOS flag is set. */ - if (cmd->flags & TRIG_WAKE_EOS) { + * if CMDF_WAKE_EOS flag is set. */ + if (cmd->flags & CMDF_WAKE_EOS) { /* 4020 doesn't support pio transfers except for fifo dregs */ if (thisboard->layout != LAYOUT_4020) bits |= ADC_INTR_EOSCAN_BITS | EN_ADC_INTR_SRC_BIT; @@ -1261,7 +1259,7 @@ static void enable_ai_interrupts(struct comedi_device *dev, /* initialize plx9080 chip */ static void init_plx9080(struct comedi_device *dev) { - const struct pcidas64_board *thisboard = comedi_board(dev); + const struct pcidas64_board *thisboard = dev->board_ptr; struct pcidas64_private *devpriv = dev->private; uint32_t bits; void __iomem *plx_iobase = devpriv->plx9080_iobase; @@ -1339,7 +1337,7 @@ static void disable_ai_pacing(struct comedi_device *dev) static int set_ai_fifo_segment_length(struct comedi_device *dev, unsigned int num_entries) { - const struct pcidas64_board *thisboard = comedi_board(dev); + const struct pcidas64_board *thisboard = dev->board_ptr; struct pcidas64_private *devpriv = dev->private; static const int increment_size = 0x100; const struct hw_fifo_info *const fifo = thisboard->ai_fifo; @@ -1368,7 +1366,7 @@ static int set_ai_fifo_segment_length(struct comedi_device *dev, /* adjusts the size of hardware fifo (which determines block size for dma xfers) */ static int set_ai_fifo_size(struct comedi_device *dev, unsigned int num_samples) { - const struct pcidas64_board *thisboard = comedi_board(dev); + const struct pcidas64_board *thisboard = dev->board_ptr; unsigned int num_fifo_entries; int retval; const struct hw_fifo_info *const fifo = thisboard->ai_fifo; @@ -1389,7 +1387,7 @@ static int set_ai_fifo_size(struct comedi_device *dev, unsigned int num_samples) /* query length of fifo */ static unsigned int ai_fifo_size(struct comedi_device *dev) { - const struct pcidas64_board *thisboard = comedi_board(dev); + const struct pcidas64_board *thisboard = dev->board_ptr; struct pcidas64_private *devpriv = dev->private; return devpriv->ai_fifo_segment_length * @@ -1399,7 +1397,7 @@ static unsigned int ai_fifo_size(struct comedi_device *dev) static void init_stc_registers(struct comedi_device *dev) { - const struct pcidas64_board *thisboard = comedi_board(dev); + const struct pcidas64_board *thisboard = dev->board_ptr; struct pcidas64_private *devpriv = dev->private; uint16_t bits; unsigned long flags; @@ -1445,7 +1443,7 @@ static void init_stc_registers(struct comedi_device *dev) static int alloc_and_init_dma_members(struct comedi_device *dev) { - const struct pcidas64_board *thisboard = comedi_board(dev); + const struct pcidas64_board *thisboard = dev->board_ptr; struct pci_dev *pcidev = comedi_to_pci_dev(dev); struct pcidas64_private *devpriv = dev->private; int i; @@ -1526,6 +1524,46 @@ static int alloc_and_init_dma_members(struct comedi_device *dev) return 0; } +static void cb_pcidas64_free_dma(struct comedi_device *dev) +{ + const struct pcidas64_board *thisboard = dev->board_ptr; + struct pci_dev *pcidev = comedi_to_pci_dev(dev); + struct pcidas64_private *devpriv = dev->private; + int i; + + if (!devpriv) + return; + + /* free pci dma buffers */ + for (i = 0; i < ai_dma_ring_count(thisboard); i++) { + if (devpriv->ai_buffer[i]) + pci_free_consistent(pcidev, + DMA_BUFFER_SIZE, + devpriv->ai_buffer[i], + devpriv->ai_buffer_bus_addr[i]); + } + for (i = 0; i < AO_DMA_RING_COUNT; i++) { + if (devpriv->ao_buffer[i]) + pci_free_consistent(pcidev, + DMA_BUFFER_SIZE, + devpriv->ao_buffer[i], + devpriv->ao_buffer_bus_addr[i]); + } + /* free dma descriptors */ + if (devpriv->ai_dma_desc) + pci_free_consistent(pcidev, + sizeof(struct plx_dma_desc) * + ai_dma_ring_count(thisboard), + devpriv->ai_dma_desc, + devpriv->ai_dma_desc_bus_addr); + if (devpriv->ao_dma_desc) + pci_free_consistent(pcidev, + sizeof(struct plx_dma_desc) * + AO_DMA_RING_COUNT, + devpriv->ao_dma_desc, + devpriv->ao_dma_desc_bus_addr); +} + static inline void warn_external_queue(struct comedi_device *dev) { dev_err(dev->class_dev, @@ -1668,7 +1706,7 @@ static int cb_pcidas64_ai_eoc(struct comedi_device *dev, struct comedi_insn *insn, unsigned long context) { - const struct pcidas64_board *thisboard = comedi_board(dev); + const struct pcidas64_board *thisboard = dev->board_ptr; struct pcidas64_private *devpriv = dev->private; unsigned int status; @@ -1687,7 +1725,7 @@ static int cb_pcidas64_ai_eoc(struct comedi_device *dev, static int ai_rinsn(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { - const struct pcidas64_board *thisboard = comedi_board(dev); + const struct pcidas64_board *thisboard = dev->board_ptr; struct pcidas64_private *devpriv = dev->private; unsigned int bits = 0, n; unsigned int channel, range, aref; @@ -1807,7 +1845,7 @@ static int ai_rinsn(struct comedi_device *dev, struct comedi_subdevice *s, static int ai_config_calibration_source(struct comedi_device *dev, unsigned int *data) { - const struct pcidas64_board *thisboard = comedi_board(dev); + const struct pcidas64_board *thisboard = dev->board_ptr; struct pcidas64_private *devpriv = dev->private; unsigned int source = data[1]; int num_calibration_sources; @@ -1829,7 +1867,7 @@ static int ai_config_calibration_source(struct comedi_device *dev, static int ai_config_block_size(struct comedi_device *dev, unsigned int *data) { - const struct pcidas64_board *thisboard = comedi_board(dev); + const struct pcidas64_board *thisboard = dev->board_ptr; int fifo_size; const struct hw_fifo_info *const fifo = thisboard->ai_fifo; unsigned int block_size, requested_block_size; @@ -1883,7 +1921,7 @@ static int ai_config_master_clock_4020(struct comedi_device *dev, /* XXX could add support for 60xx series */ static int ai_config_master_clock(struct comedi_device *dev, unsigned int *data) { - const struct pcidas64_board *thisboard = comedi_board(dev); + const struct pcidas64_board *thisboard = dev->board_ptr; switch (thisboard->layout) { case LAYOUT_4020: @@ -1920,14 +1958,14 @@ static unsigned int get_divisor(unsigned int ns, unsigned int flags) { unsigned int divisor; - switch (flags & TRIG_ROUND_MASK) { - case TRIG_ROUND_UP: + switch (flags & CMDF_ROUND_MASK) { + case CMDF_ROUND_UP: divisor = (ns + TIMER_BASE - 1) / TIMER_BASE; break; - case TRIG_ROUND_DOWN: + case CMDF_ROUND_DOWN: divisor = ns / TIMER_BASE; break; - case TRIG_ROUND_NEAREST: + case CMDF_ROUND_NEAREST: default: divisor = (ns + TIMER_BASE / 2) / TIMER_BASE; break; @@ -1941,7 +1979,7 @@ static unsigned int get_divisor(unsigned int ns, unsigned int flags) */ static void check_adc_timing(struct comedi_device *dev, struct comedi_cmd *cmd) { - const struct pcidas64_board *thisboard = comedi_board(dev); + const struct pcidas64_board *thisboard = dev->board_ptr; unsigned int convert_divisor = 0, scan_divisor; static const int min_convert_divisor = 3; static const int max_convert_divisor = @@ -1989,7 +2027,7 @@ static int cb_pcidas64_ai_check_chanlist(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_cmd *cmd) { - const struct pcidas64_board *board = comedi_board(dev); + const struct pcidas64_board *board = dev->board_ptr; unsigned int aref0 = CR_AREF(cmd->chanlist[0]); int i; @@ -2028,7 +2066,7 @@ static int cb_pcidas64_ai_check_chanlist(struct comedi_device *dev, static int ai_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_cmd *cmd) { - const struct pcidas64_board *thisboard = comedi_board(dev); + const struct pcidas64_board *thisboard = dev->board_ptr; int err = 0; unsigned int tmp_arg, tmp_arg2; unsigned int triggers; @@ -2178,7 +2216,7 @@ static void setup_sample_counters(struct comedi_device *dev, static inline unsigned int dma_transfer_size(struct comedi_device *dev) { - const struct pcidas64_board *thisboard = comedi_board(dev); + const struct pcidas64_board *thisboard = dev->board_ptr; struct pcidas64_private *devpriv = dev->private; unsigned int num_samples; @@ -2265,7 +2303,7 @@ static void select_master_clock_4020(struct comedi_device *dev, static void select_master_clock(struct comedi_device *dev, const struct comedi_cmd *cmd) { - const struct pcidas64_board *thisboard = comedi_board(dev); + const struct pcidas64_board *thisboard = dev->board_ptr; switch (thisboard->layout) { case LAYOUT_4020: @@ -2297,7 +2335,7 @@ static inline void dma_start_sync(struct comedi_device *dev, static void set_ai_pacing(struct comedi_device *dev, struct comedi_cmd *cmd) { - const struct pcidas64_board *thisboard = comedi_board(dev); + const struct pcidas64_board *thisboard = dev->board_ptr; struct pcidas64_private *devpriv = dev->private; uint32_t convert_counter = 0, scan_counter = 0; @@ -2346,7 +2384,7 @@ static int use_internal_queue_6xxx(const struct comedi_cmd *cmd) static int setup_channel_queue(struct comedi_device *dev, const struct comedi_cmd *cmd) { - const struct pcidas64_board *thisboard = comedi_board(dev); + const struct pcidas64_board *thisboard = dev->board_ptr; struct pcidas64_private *devpriv = dev->private; unsigned short bits; int i; @@ -2483,7 +2521,7 @@ static inline void load_first_dma_descriptor(struct comedi_device *dev, static int ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s) { - const struct pcidas64_board *thisboard = comedi_board(dev); + const struct pcidas64_board *thisboard = dev->board_ptr; struct pcidas64_private *devpriv = dev->private; struct comedi_async *async = s->async; struct comedi_cmd *cmd = &async->cmd; @@ -2541,7 +2579,7 @@ static int ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s) /* clear adc buffer */ writew(0, devpriv->main_iobase + ADC_BUFFER_CLEAR_REG); - if ((cmd->flags & TRIG_WAKE_EOS) == 0 || + if ((cmd->flags & CMDF_WAKE_EOS) == 0 || thisboard->layout == LAYOUT_4020) { devpriv->ai_dma_index = 0; @@ -2575,7 +2613,7 @@ static int ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s) /* enable pacing, triggering, etc */ bits = ADC_ENABLE_BIT | ADC_SOFT_GATE_BITS | ADC_GATE_LEVEL_BIT; - if (cmd->flags & TRIG_WAKE_EOS) + if (cmd->flags & CMDF_WAKE_EOS) bits |= ADC_DMA_DISABLE_BIT; /* set start trigger */ if (cmd->start_src == TRIG_EXT) { @@ -2700,7 +2738,7 @@ static void pio_drain_ai_fifo_32(struct comedi_device *dev) /* empty fifo */ static void pio_drain_ai_fifo(struct comedi_device *dev) { - const struct pcidas64_board *thisboard = comedi_board(dev); + const struct pcidas64_board *thisboard = dev->board_ptr; if (thisboard->layout == LAYOUT_4020) pio_drain_ai_fifo_32(dev); @@ -2710,7 +2748,7 @@ static void pio_drain_ai_fifo(struct comedi_device *dev) static void drain_dma_buffers(struct comedi_device *dev, unsigned int channel) { - const struct pcidas64_board *thisboard = comedi_board(dev); + const struct pcidas64_board *thisboard = dev->board_ptr; struct pcidas64_private *devpriv = dev->private; struct comedi_async *async = dev->read_subdev->async; struct comedi_cmd *cmd = &async->cmd; @@ -2755,7 +2793,7 @@ static void handle_ai_interrupt(struct comedi_device *dev, unsigned short status, unsigned int plx_status) { - const struct pcidas64_board *thisboard = comedi_board(dev); + const struct pcidas64_board *thisboard = dev->board_ptr; struct pcidas64_private *devpriv = dev->private; struct comedi_subdevice *s = dev->read_subdev; struct comedi_async *async = s->async; @@ -2782,7 +2820,7 @@ static void handle_ai_interrupt(struct comedi_device *dev, /* drain fifo with pio */ if ((status & ADC_DONE_BIT) || - ((cmd->flags & TRIG_WAKE_EOS) && + ((cmd->flags & CMDF_WAKE_EOS) && (status & ADC_INTR_PENDING_BIT) && (thisboard->layout != LAYOUT_4020))) { spin_lock_irqsave(&dev->spinlock, flags); @@ -3037,7 +3075,7 @@ static int ai_cancel(struct comedi_device *dev, struct comedi_subdevice *s) static int ao_winsn(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { - const struct pcidas64_board *thisboard = comedi_board(dev); + const struct pcidas64_board *thisboard = dev->board_ptr; struct pcidas64_private *devpriv = dev->private; int chan = CR_CHAN(insn->chanspec); int range = CR_RANGE(insn->chanspec); @@ -3061,18 +3099,7 @@ static int ao_winsn(struct comedi_device *dev, struct comedi_subdevice *s, } /* remember output value */ - devpriv->ao_value[chan] = data[0]; - - return 1; -} - -static int ao_readback_insn(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, unsigned int *data) -{ - struct pcidas64_private *devpriv = dev->private; - - data[0] = devpriv->ao_value[CR_CHAN(insn->chanspec)]; + s->readback[chan] = data[0]; return 1; } @@ -3200,7 +3227,7 @@ static inline int external_ai_queue_in_use(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_cmd *cmd) { - const struct pcidas64_board *thisboard = comedi_board(dev); + const struct pcidas64_board *thisboard = dev->board_ptr; if (s->busy) return 0; @@ -3284,7 +3311,7 @@ static int cb_pcidas64_ao_check_chanlist(struct comedi_device *dev, static int ao_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_cmd *cmd) { - const struct pcidas64_board *thisboard = comedi_board(dev); + const struct pcidas64_board *thisboard = dev->board_ptr; int err = 0; unsigned int tmp_arg; @@ -3369,26 +3396,16 @@ static int ao_cancel(struct comedi_device *dev, struct comedi_subdevice *s) return 0; } -static int dio_callback(int dir, int port, int data, unsigned long arg) -{ - void __iomem *iobase = (void __iomem *)arg; - - if (dir) { - writeb(data, iobase + port); - return 0; - } - return readb(iobase + port); -} - -static int dio_callback_4020(int dir, int port, int data, unsigned long arg) +static int dio_callback_4020(struct comedi_device *dev, + int dir, int port, int data, unsigned long iobase) { - void __iomem *iobase = (void __iomem *)arg; + struct pcidas64_private *devpriv = dev->private; if (dir) { - writew(data, iobase + 2 * port); + writew(data, devpriv->main_iobase + iobase + 2 * port); return 0; } - return readw(iobase + 2 * port); + return readw(devpriv->main_iobase + iobase + 2 * port); } static int di_rbits(struct comedi_device *dev, struct comedi_subdevice *s, @@ -3562,7 +3579,7 @@ static int caldac_i2c_write(struct comedi_device *dev, static void caldac_write(struct comedi_device *dev, unsigned int channel, unsigned int value) { - const struct pcidas64_board *thisboard = comedi_board(dev); + const struct pcidas64_board *thisboard = dev->board_ptr; struct pcidas64_private *devpriv = dev->private; devpriv->caldac_state[channel] = value; @@ -3748,10 +3765,9 @@ static int eeprom_read_insn(struct comedi_device *dev, */ static int setup_subdevices(struct comedi_device *dev) { - const struct pcidas64_board *thisboard = comedi_board(dev); + const struct pcidas64_board *thisboard = dev->board_ptr; struct pcidas64_private *devpriv = dev->private; struct comedi_subdevice *s; - void __iomem *dio_8255_iobase; int i; int ret; @@ -3799,8 +3815,13 @@ static int setup_subdevices(struct comedi_device *dev) s->n_chan = thisboard->ao_nchan; s->maxdata = (1 << thisboard->ao_bits) - 1; s->range_table = thisboard->ao_range_table; - s->insn_read = ao_readback_insn; s->insn_write = ao_winsn; + s->insn_read = comedi_readback_insn_read; + + ret = comedi_alloc_subdev_readback(s); + if (ret) + return ret; + if (ao_cmd_is_supported(thisboard)) { dev->write_subdev = s; s->do_cmdtest = ao_cmdtest; @@ -3840,13 +3861,11 @@ static int setup_subdevices(struct comedi_device *dev) s = &dev->subdevices[4]; if (thisboard->has_8255) { if (thisboard->layout == LAYOUT_4020) { - dio_8255_iobase = devpriv->main_iobase + I8255_4020_REG; ret = subdev_8255_init(dev, s, dio_callback_4020, - (unsigned long)dio_8255_iobase); + I8255_4020_REG); } else { - dio_8255_iobase = dev->mmio + DIO_8255_OFFSET; - ret = subdev_8255_init(dev, s, dio_callback, - (unsigned long)dio_8255_iobase); + ret = subdev_8255_mm_init(dev, s, NULL, + DIO_8255_OFFSET); } if (ret) return ret; @@ -3996,54 +4015,22 @@ static int auto_attach(struct comedi_device *dev, static void detach(struct comedi_device *dev) { - const struct pcidas64_board *thisboard = comedi_board(dev); - struct pci_dev *pcidev = comedi_to_pci_dev(dev); struct pcidas64_private *devpriv = dev->private; - unsigned int i; if (dev->irq) free_irq(dev->irq, dev); if (devpriv) { - if (pcidev) { - if (devpriv->plx9080_iobase) { - disable_plx_interrupts(dev); - iounmap(devpriv->plx9080_iobase); - } - if (devpriv->main_iobase) - iounmap(devpriv->main_iobase); - if (dev->mmio) - iounmap(dev->mmio); - /* free pci dma buffers */ - for (i = 0; i < ai_dma_ring_count(thisboard); i++) { - if (devpriv->ai_buffer[i]) - pci_free_consistent(pcidev, - DMA_BUFFER_SIZE, - devpriv->ai_buffer[i], - devpriv->ai_buffer_bus_addr[i]); - } - for (i = 0; i < AO_DMA_RING_COUNT; i++) { - if (devpriv->ao_buffer[i]) - pci_free_consistent(pcidev, - DMA_BUFFER_SIZE, - devpriv->ao_buffer[i], - devpriv->ao_buffer_bus_addr[i]); - } - /* free dma descriptors */ - if (devpriv->ai_dma_desc) - pci_free_consistent(pcidev, - sizeof(struct plx_dma_desc) * - ai_dma_ring_count(thisboard), - devpriv->ai_dma_desc, - devpriv->ai_dma_desc_bus_addr); - if (devpriv->ao_dma_desc) - pci_free_consistent(pcidev, - sizeof(struct plx_dma_desc) * - AO_DMA_RING_COUNT, - devpriv->ao_dma_desc, - devpriv->ao_dma_desc_bus_addr); + if (devpriv->plx9080_iobase) { + disable_plx_interrupts(dev); + iounmap(devpriv->plx9080_iobase); } + if (devpriv->main_iobase) + iounmap(devpriv->main_iobase); + if (dev->mmio) + iounmap(dev->mmio); } comedi_pci_disable(dev); + cb_pcidas64_free_dma(dev); } static struct comedi_driver cb_pcidas64_driver = { |