the sdb address of the wb crossbar. The sdb address
is store in a CSR, 0xb, and it can be retrieved from the
firmware using an asm macro call.

Comparing std_logic <= '0' seems to work!
However, it is certainly not what the author intended.

Signed-off-by: Theodor Stana <t.stana@cern.ch>

This is done by adding a generic to the entity, which is connected directly to
the gc_fsm_watchdog component instantiated within the wb_i2c_bridge. The user
should calculate the appropriate watchdog timeout value and set it via this
generic.

The instantiation template in the wishbone_pkg is also updated.

Signed-off-by: Theodor Stana <t.stana@cern.ch>

Theodor-Adrian Stana authored 11 years ago and Tomasz Wlostowski committed 11 years ago

To make the design more modular, moved the synchronization chain out of
the gc_glitch_filt component. Made the necessary changes in the
components using the gc_glitch_filt.

Also added gc_glitch_filt documentation.

Signed-off-by: Theodor Stana <t.stana@cern.ch>

Theodor-Adrian Stana authored 11 years ago and Tomasz Wlostowski committed 11 years ago

Signed-off-by: Theodor Stana <t.stana@cern.ch>

Grzegorz Daniluk authored 11 years ago and Tomasz Wlostowski committed 11 years ago

Xilinx defines almost full threshold not as the used words in the FIFO but as
number of available empty words (UG363 - Virtex 6 FPGA Memory Resources

Theodor-Adrian Stana authored 11 years ago and Tomasz Wlostowski committed 11 years ago

Also updated the rest of the documentation file to have a pretty
regmap.

Signed-off-by: Theodor Stana <t.stana@cern.ch>

Theodor-Adrian Stana authored 11 years ago and Tomasz Wlostowski committed 11 years ago

Bridge: Removed "redundant" SIM_WB_TRANSFER state.

Slave: Removed redundant ADDR_CHECK state and moved its code to
the ADDR state.

Also corrected a bug whereby the ack_i pin was not being checked within
the ADDR_ACK state. This was causing the FSM to advance even thogh the
slave was actually NACK-ing.

DOC: Updated documentation for both these modules

Signed-off-by: Theodor Stana <t.stana@cern.ch>

Miguel Jimenez Lopez authored 11 years ago and Grzegorz Daniluk committed 11 years ago

This change is necessary for network control/monitor tool in order to read the GUI command output.
The GUI command output can not be stored into a 1024 bytes fifo.

wb_irq_slave: added clear and enable registers

Theodor-Adrian Stana authored 11 years ago and Tomasz Wlostowski committed 11 years ago

Signed-off-by: Theodor Stana <t.stana@cern.ch>
Signed-off-by: Tomasz Włostowski <tomasz.wlostowski@cern.ch>

Theodor-Adrian Stana authored 11 years ago and Tomasz Wlostowski committed 11 years ago

Signed-off-by: Theodor Stana <t.stana@cern.ch>
Signed-off-by: Tomasz Włostowski <tomasz.wlostowski@cern.ch>

Theodor-Adrian Stana authored 11 years ago and Tomasz Wlostowski committed 11 years ago

- I2C slave component now samples SDA line one rising SCL and changes
states and shifts out bits on its falling edge
- I2C slave component has clearer status outputs
- bridge component changed to reflect changes in I2C slave interface
- bridge component also returns to IDLE state on I2C stop condition, as
reflected by the I2C slave

Signed-off-by: Theodor Stana <t.stana@cern.ch>
Signed-off-by: Tomasz Włostowski <tomasz.wlostowski@cern.ch>

Theodor-Adrian Stana authored 11 years ago and Tomasz Wlostowski committed 11 years ago

- an FSM watchdog component was added to the multiboot_fsm; the timeout of
the wathcdog is reflected in the component's status register
- multiboot_regs was wbgen-ized
- updated wb_xil_multiboot top-level to reflect new changes

Signed-off-by: Theodor Stana <t.stana@cern.ch>
Signed-off-by: Tomasz Włostowski <tomasz.wlostowski@cern.ch>

Theodor-Adrian Stana authored 11 years ago and Tomasz Wlostowski committed 11 years ago

Signed-off-by: Theodor Stana <t.stana@cern.ch>
Signed-off-by: Tomasz Włostowski <tomasz.wlostowski@cern.ch>

Theodor-Adrian Stana authored 11 years ago and Tomasz Wlostowski committed 11 years ago

Signed-off-by: Theodor Stana <t.stana@cern.ch>
Signed-off-by: Tomasz Włostowski <tomasz.wlostowski@cern.ch>

Theodor-Adrian Stana authored 11 years ago and Tomasz Wlostowski committed 11 years ago

- gc_i2c_slave     -- generic I2C slave to be used with a processor or tied to a
                      Wishbone interface
- gc_glitch_filter -- glitch filter with selectable number of taps
- wb_i2c_bridge    -- I2C bridge implementing the protocol defined with ELMA
                      for monitoring VME crates
- wb_xil_multiboot -- module that accesses the Spartan-6 configuration logic
                      for reconfiguring the FPGA using MultiBoot

Doc files for each of these modules can be found in the doc/ folder.

Signed-off-by: Theodor Stana <t.stana@cern.ch>
Signed-off-by: Tomasz Włostowski <tomasz.wlostowski@cern.ch>

Include automatic crossbar layout and timing improvement clock cutter.

This makes it possible to connect a slave to the crossbar which is optimized
away by the synthesis tool. This is useful when some slaves attached to the
crossbar are optional.