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pfv: expose CR as a flat 32-bit value.

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Jean-François Nguyen 2 years ago
parent ed2122d940
commit 6ae4978f0c
4 changed files with 45 additions and 126 deletions
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43
cores/microwatt/_wrapper.py
Unescape Escape View File

@ -121,45 +121,10 @@ class MicrowattWrapper(Elaboratable):
("o", "pfv_rt_w_stb", self.pfv.rt.w_stb),
("o", "pfv_rt_w_data", self.pfv.rt.w_data),

("o", "pfv_cr0_r_stb", self.pfv.cr0.r_stb),
("o", "pfv_cr0_r_data", self.pfv.cr0.r_data),
("o", "pfv_cr0_w_stb", self.pfv.cr0.w_stb),
("o", "pfv_cr0_w_data", self.pfv.cr0.w_data),

("o", "pfv_cr1_r_stb", self.pfv.cr1.r_stb),
("o", "pfv_cr1_r_data", self.pfv.cr1.r_data),
("o", "pfv_cr1_w_stb", self.pfv.cr1.w_stb),
("o", "pfv_cr1_w_data", self.pfv.cr1.w_data),

("o", "pfv_cr2_r_stb", self.pfv.cr2.r_stb),
("o", "pfv_cr2_r_data", self.pfv.cr2.r_data),
("o", "pfv_cr2_w_stb", self.pfv.cr2.w_stb),
("o", "pfv_cr2_w_data", self.pfv.cr2.w_data),

("o", "pfv_cr3_r_stb", self.pfv.cr3.r_stb),
("o", "pfv_cr3_r_data", self.pfv.cr3.r_data),
("o", "pfv_cr3_w_stb", self.pfv.cr3.w_stb),
("o", "pfv_cr3_w_data", self.pfv.cr3.w_data),

("o", "pfv_cr4_r_stb", self.pfv.cr4.r_stb),
("o", "pfv_cr4_r_data", self.pfv.cr4.r_data),
("o", "pfv_cr4_w_stb", self.pfv.cr4.w_stb),
("o", "pfv_cr4_w_data", self.pfv.cr4.w_data),

("o", "pfv_cr5_r_stb", self.pfv.cr5.r_stb),
("o", "pfv_cr5_r_data", self.pfv.cr5.r_data),
("o", "pfv_cr5_w_stb", self.pfv.cr5.w_stb),
("o", "pfv_cr5_w_data", self.pfv.cr5.w_data),

("o", "pfv_cr6_r_stb", self.pfv.cr6.r_stb),
("o", "pfv_cr6_r_data", self.pfv.cr6.r_data),
("o", "pfv_cr6_w_stb", self.pfv.cr6.w_stb),
("o", "pfv_cr6_w_data", self.pfv.cr6.w_data),

("o", "pfv_cr7_r_stb", self.pfv.cr7.r_stb),
("o", "pfv_cr7_r_data", self.pfv.cr7.r_data),
("o", "pfv_cr7_w_stb", self.pfv.cr7.w_stb),
("o", "pfv_cr7_w_data", self.pfv.cr7.w_data),
("o", "pfv_cr_r_stb", self.pfv.cr.r_stb),
("o", "pfv_cr_r_data", self.pfv.cr.r_data),
("o", "pfv_cr_w_stb", self.pfv.cr.w_stb),
("o", "pfv_cr_w_data", self.pfv.cr.w_data),

("o", "pfv_lr_r_stb", self.pfv.lr.r_stb),
("o", "pfv_lr_r_data", self.pfv.lr.r_data),

72
cores/microwatt/microwatt_top.vhdl
Unescape Escape View File

@ -59,38 +59,10 @@ entity toplevel is
pfv_rt_w_stb : out std_ulogic;
pfv_rt_w_data : out std_ulogic_vector(63 downto 0);

pfv_cr0_r_stb : out std_ulogic;
pfv_cr0_r_data : out std_ulogic_vector(3 downto 0);
pfv_cr0_w_stb : out std_ulogic;
pfv_cr0_w_data : out std_ulogic_vector(3 downto 0);
pfv_cr1_r_stb : out std_ulogic;
pfv_cr1_r_data : out std_ulogic_vector(3 downto 0);
pfv_cr1_w_stb : out std_ulogic;
pfv_cr1_w_data : out std_ulogic_vector(3 downto 0);
pfv_cr2_r_stb : out std_ulogic;
pfv_cr2_r_data : out std_ulogic_vector(3 downto 0);
pfv_cr2_w_stb : out std_ulogic;
pfv_cr2_w_data : out std_ulogic_vector(3 downto 0);
pfv_cr3_r_stb : out std_ulogic;
pfv_cr3_r_data : out std_ulogic_vector(3 downto 0);
pfv_cr3_w_stb : out std_ulogic;
pfv_cr3_w_data : out std_ulogic_vector(3 downto 0);
pfv_cr4_r_stb : out std_ulogic;
pfv_cr4_r_data : out std_ulogic_vector(3 downto 0);
pfv_cr4_w_stb : out std_ulogic;
pfv_cr4_w_data : out std_ulogic_vector(3 downto 0);
pfv_cr5_r_stb : out std_ulogic;
pfv_cr5_r_data : out std_ulogic_vector(3 downto 0);
pfv_cr5_w_stb : out std_ulogic;
pfv_cr5_w_data : out std_ulogic_vector(3 downto 0);
pfv_cr6_r_stb : out std_ulogic;
pfv_cr6_r_data : out std_ulogic_vector(3 downto 0);
pfv_cr6_w_stb : out std_ulogic;
pfv_cr6_w_data : out std_ulogic_vector(3 downto 0);
pfv_cr7_r_stb : out std_ulogic;
pfv_cr7_r_data : out std_ulogic_vector(3 downto 0);
pfv_cr7_w_stb : out std_ulogic;
pfv_cr7_w_data : out std_ulogic_vector(3 downto 0);
pfv_cr_r_stb : out std_ulogic_vector( 7 downto 0);
pfv_cr_r_data : out std_ulogic_vector(31 downto 0);
pfv_cr_w_stb : out std_ulogic_vector( 7 downto 0);
pfv_cr_w_data : out std_ulogic_vector(31 downto 0);

pfv_lr_r_stb : out std_ulogic;
pfv_lr_r_data : out std_ulogic_vector(63 downto 0);
@ -179,38 +151,10 @@ begin
pfv_rt_w_stb <= pfv.rt.w_stb;
pfv_rt_w_data <= pfv.rt.w_data;

pfv_cr0_r_stb <= pfv.cr(0).r_stb;
pfv_cr0_r_data <= pfv.cr(0).r_data;
pfv_cr0_w_stb <= pfv.cr(0).w_stb;
pfv_cr0_w_data <= pfv.cr(0).w_data;
pfv_cr1_r_stb <= pfv.cr(1).r_stb;
pfv_cr1_r_data <= pfv.cr(1).r_data;
pfv_cr1_w_stb <= pfv.cr(1).w_stb;
pfv_cr1_w_data <= pfv.cr(1).w_data;
pfv_cr2_r_stb <= pfv.cr(2).r_stb;
pfv_cr2_r_data <= pfv.cr(2).r_data;
pfv_cr2_w_stb <= pfv.cr(2).w_stb;
pfv_cr2_w_data <= pfv.cr(2).w_data;
pfv_cr3_r_stb <= pfv.cr(3).r_stb;
pfv_cr3_r_data <= pfv.cr(3).r_data;
pfv_cr3_w_stb <= pfv.cr(3).w_stb;
pfv_cr3_w_data <= pfv.cr(3).w_data;
pfv_cr4_r_stb <= pfv.cr(4).r_stb;
pfv_cr4_r_data <= pfv.cr(4).r_data;
pfv_cr4_w_stb <= pfv.cr(4).w_stb;
pfv_cr4_w_data <= pfv.cr(4).w_data;
pfv_cr5_r_stb <= pfv.cr(5).r_stb;
pfv_cr5_r_data <= pfv.cr(5).r_data;
pfv_cr5_w_stb <= pfv.cr(5).w_stb;
pfv_cr5_w_data <= pfv.cr(5).w_data;
pfv_cr6_r_stb <= pfv.cr(6).r_stb;
pfv_cr6_r_data <= pfv.cr(6).r_data;
pfv_cr6_w_stb <= pfv.cr(6).w_stb;
pfv_cr6_w_data <= pfv.cr(6).w_data;
pfv_cr7_r_stb <= pfv.cr(7).r_stb;
pfv_cr7_r_data <= pfv.cr(7).r_data;
pfv_cr7_w_stb <= pfv.cr(7).w_stb;
pfv_cr7_w_data <= pfv.cr(7).w_data;
pfv_cr_r_stb <= pfv.cr.r_stb;
pfv_cr_r_data <= pfv.cr.r_data;
pfv_cr_w_stb <= pfv.cr.w_stb;
pfv_cr_w_data <= pfv.cr.w_data;

pfv_lr_r_stb <= pfv.lr.r_stb;
pfv_lr_r_data <= pfv.lr.r_data;

44
power_fv/checks/cr.py
Unescape Escape View File

@ -22,36 +22,46 @@ class CRCheck(Elaboratable):

spec_order = AnyConst(self.pfv.order.width)

cr = Array(Record([
("written", 1),
("shadow", 4),
], name=f"cr{i}") for i in range(8))
cr_map = Array(
Record([
("pfv", [
("r_stb", 1),
("r_data", 4),
("w_stb", 1),
("w_data", 4),
]),
("written", 1),
("shadow", 4),
], name=f"cr_{i}") for i in range(8)
)

cr_written_any = 0

with m.If(self.pfv.stb & (self.pfv.order <= spec_order)):
for i, cr_field in enumerate(cr):
pfv_cr_field = getattr(self.pfv, f"cr{i}")
for i, cr_field in enumerate(cr_map):
m.d.comb += [
cr_field.pfv.r_stb .eq(self.pfv.cr.r_stb[i]),
cr_field.pfv.r_data.eq(self.pfv.cr.r_data.word_select(i, 4)),
cr_field.pfv.w_stb .eq(self.pfv.cr.w_stb[i]),
cr_field.pfv.w_data.eq(self.pfv.cr.w_data.word_select(i, 4)),
]
cr_written_any |= cr_field.written

with m.If(pfv_cr_field.w_stb):
with m.If(self.pfv.stb & (self.pfv.order <= spec_order)):
for cr_field in cr_map:
with m.If(cr_field.pfv.w_stb):
m.d.sync += [
cr_field.written.eq(1),
cr_field.shadow .eq(pfv_cr_field.w_data),
cr_field.shadow .eq(cr_field.pfv.w_data),
]

cr_written_any |= cr_field.written

with m.If(self.post):
m.d.sync += [
Assume(Past(self.pfv.stb)),
Assume(Past(self.pfv.order) == spec_order),
Assume(cr_written_any),
]

for i, cr_field in enumerate(cr):
pfv_cr_field = getattr(self.pfv, f"cr{i}")

with m.If(Past(pfv_cr_field.r_stb)):
m.d.sync += Assert(Past(pfv_cr_field.r_data) == Past(cr_field.shadow))
for cr_field in cr_map:
with m.If(Past(cr_field.pfv.r_stb)):
m.d.sync += Assert(Past(cr_field.pfv.r_data) == Past(cr_field.shadow))

return m

12
power_fv/pfv.py
Unescape Escape View File

@ -58,12 +58,12 @@ class Interface(Record):
# CR

layout += [
(f"cr{i}", [
("r_stb", 1),
("r_data", 4),
("w_stb", 1),
("w_data", 4),
]) for i in range(8)
("cr", [
("r_stb", 8),
("r_data", 32),
("w_stb", 8),
("w_data", 32),
]),
]

# SPRs

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