New Functionality

• New function, pciopenex, has flags parameter:

  PCI_OPEN_EXCL

  open resource exclusively (default for all except baseboard resource)

  PCI_OPEN_NEXCL

  open resource non-exclusively (default for baseboard resource)

• New flag, CHAN_NBLOCK, for pci_open_chan puts channel into non-blocking mode.
• New function, pci_chan_blocking, allows a channel to be switched between blocking and non-blocking mode.
• New function, pci_chan_buf_usage, reports statistics about the hardware buffers for a channel.
• New functions, pci_chan_set_signal/pci_chan_get_signal, allow the signals used for underflow/overflow, loss of sync, and data ready conditions to be set or queried (not fully supported).
• New functions, pci_framer_set_mode/pci_framer_get_mode, allow the user to set and query framer parameters without opening a channel.
• New functions, pci_chan_set_idle/pci_chan_get_idle, allow the user to set and query the idle code for a transmit channel (sent when no buffered data is available).
• New functions, pci_framer_set_idle/pci_framer_get_idle, allow the user to set and query the idle code for a framer (sent on all slots not associated with a channel, default for newly opened channels).
• New function, pci_reg_rmw, safely sets and clears register bits using system-wide synchronization.
• New functions, mod_eerom_read/mod_eerom_write, allow access to eerom contents using an already open PCI_MOD * instead of a name.
• pci_read_chan now supports arbitrary transfer sizes, arbitrary buffer alignments, and buffers which cross page boundries (on Intel, page crossing is not an issue on Sparc).
• pci_flush_chan now supports transmit channels by blocking until all queued data is transmitted. Use before closing a transmit channel to ensure that all data is sent (pci_close_chan discards queued data).
• Initial expansion support, including PCI config space access to expansion bridge and modules and initial support for the IMATM, DM2C31, DM12C549, and DM5420 modules.

Renamed Functions

Several functions have been renamed to match the names of similar functions in the V6M6 library. With one exception (pci_waitsync) none of these functions are likely to appear in channelization applications.

Renamed Functions in Version 0.92

Old Function Name	New Function Name
pci_waitsync	pci_chan_waitsync
pci_read_eeprom	pci_eerom_read
pci_write_eeprom	pci_eerom_write
config_read_i8b	pci_up_cfg8/pci_up_cfg8le
config_read_i16b	pci_up_cfg16/pci_up_cfg16le
config_read_i32b	pci_up_cfg32/pci_up_cfg32le
config_write_i8b	pci_dl_cfg8/pci_dl_cfg8le
config_write_i16b	pci_dl_cfg16/pci_dl_cfg16le
config_write_i32b	pci_dl_cfg32/pci_dl_cfg32le

New/Changed Functionality

• Init script (installed as /etc/rc2.d/S96dpinit.sh) provided to load driver and bring boards out of reset at system boot
• Removed autorun code and no-autorun driver property (boards are started by init script)
• Support non-blocking channel I/O
• Partial support for signaling on channel errors and channel data ready
• Support for pci_reg_rmw library function
• Support for pci_chan_buf_usage library function
• Support for pci_flush_chan for transmit channels
• Report underflows on write channels (returns EOVERFLOW)
• Report overflows on read channels (returns EOVERFLOW)
• Report loss of sync on read channels (returns ENOLINK)