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Diffstat (limited to 'testsuite/gna/issue332/irqc_pif_pkg.vhd')
| -rw-r--r-- | testsuite/gna/issue332/irqc_pif_pkg.vhd | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/testsuite/gna/issue332/irqc_pif_pkg.vhd b/testsuite/gna/issue332/irqc_pif_pkg.vhd new file mode 100644 index 000000000..34bd72509 --- /dev/null +++ b/testsuite/gna/issue332/irqc_pif_pkg.vhd @@ -0,0 +1,110 @@ +--======================================================================================================================== +-- Copyright (c) 2016 by Bitvis AS. All rights reserved. +-- You should have received a copy of the license file containing the MIT License (see LICENSE.TXT), if not, +-- contact Bitvis AS <support@bitvis.no>. +-- +-- UVVM AND ANY PART THEREOF ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE +-- WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS +-- OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR +-- OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH UVVM OR THE USE OR OTHER DEALINGS IN UVVM. +--======================================================================================================================== + +------------------------------------------------------------------------------------------ +-- VHDL unit : Bitvis IRQC Library : irqc_pif_pkg +-- +-- Description : See dedicated powerpoint presentation and README-file(s) +------------------------------------------------------------------------------------------ + + +Library ieee; +use ieee.std_logic_1164.all; +use ieee.numeric_std.all; + +package irqc_pif_pkg is + + -- Change this to a generic when generic in packages is allowed (VHDL 2008) + constant C_NUM_SOURCES : integer := 6; -- 1 <= C_NUM_SOURCES <= Data width + + -- Notation for regs: (Included in constant name as info to SW) + -- - RW: Readable and writable reg. + -- - RO: Read only reg. (output from IP) + -- - WO: Write only reg. (typically single cycle strobe to IP) + + -- Notation for signals (or fields in record) going between PIF and core: + -- Same notations as for register-constants above, but + -- a preceeding 'a' (e.g. awo) means the register is auxiliary to the PIF. + -- This means no flop in the PIF, but in the core. (Or just a dummy-register with no flop) + + constant C_ADDR_IRR : integer := 0; + constant C_ADDR_IER : integer := 1; + constant C_ADDR_ITR : integer := 2; + constant C_ADDR_ICR : integer := 3; + constant C_ADDR_IPR : integer := 4; + constant C_ADDR_IRQ2CPU_ENA : integer := 5; + constant C_ADDR_IRQ2CPU_DISABLE : integer := 6; + constant C_ADDR_IRQ2CPU_ALLOWED : integer := 7; + + -- Signals from pif to core + type t_p2c is record + rw_ier : std_logic_vector(C_NUM_SOURCES-1 downto 0); + awt_itr : std_logic_vector(C_NUM_SOURCES-1 downto 0); + awt_icr : std_logic_vector(C_NUM_SOURCES-1 downto 0); + awt_irq2cpu_ena : std_logic; + awt_irq2cpu_disable : std_logic; + end record t_p2c; + + -- Signals from core to PIF + type t_c2p is record + aro_irr : std_logic_vector(C_NUM_SOURCES-1 downto 0); + aro_ipr : std_logic_vector(C_NUM_SOURCES-1 downto 0); + aro_irq2cpu_allowed : std_logic; + end record t_c2p; + + type t_sbi_if is record + cs : std_logic; -- to dut + addr : unsigned; -- to dut + rd : std_logic; -- to dut + wr : std_logic; -- to dut + wdata : std_logic_vector; -- to dut + ready : std_logic; -- from dut + rdata : std_logic_vector; -- from dut + end record; + + ------------------------------------------ + -- init_sbi_if_signals + ------------------------------------------ + -- - This function returns an SBI interface with initialized signals. + -- - All SBI input signals are initialized to 0 + -- - All SBI output signals are initialized to Z + function init_sbi_if_signals( + addr_width : natural; + data_width : natural + ) return t_sbi_if; + + +end package irqc_pif_pkg; + +package body irqc_pif_pkg is + + --------------------------------------------------------------------------------- + -- initialize sbi to dut signals + --------------------------------------------------------------------------------- + + function init_sbi_if_signals( + addr_width : natural; + data_width : natural + ) return t_sbi_if is + variable result : t_sbi_if( addr(addr_width - 1 downto 0), + wdata(data_width - 1 downto 0), + rdata(data_width - 1 downto 0)); + begin + result.cs := '0'; + result.rd := '0'; + result.wr := '0'; + result.addr := (others => '0'); + result.wdata := (others => '0'); + result.ready := 'Z'; + result.rdata := (others => 'Z'); + return result; + end function; +end package body irqc_pif_pkg; |