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dev-arm: Add named variable for GICD_TYPER.IDBits

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This could be used by other GICv3 components to query the maximum
number of implemented interrupt identifiers

Change-Id: I132e50de331aea22523260bcefba7e961b53eccd
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/18599
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
This commit is contained in:
Giacomo Travaglini
2019-04-30 17:16:19 +01:00
parent 5c891178b9
commit 3762721456
2 changed files with 2 additions and 1 deletions
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2
src/dev/arm/gic_v3_distributor.cc
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@@ -472,7 +472,7 @@ Gicv3Distributor::read(Addr addr, size_t size, bool is_secure_access)
{
int max_spi_int_id = itLines - 1;
int it_lines_number = ceil((max_spi_int_id + 1) / 32.0) - 1;
return (1 << 26) | (1 << 25) | (1 << 24) | (0xf << 19) |
return (1 << 26) | (1 << 25) | (1 << 24) | (IDBITS << 19) |
(1 << 17) | (gic->getSystem()->haveSecurity() << 10) |
(it_lines_number << 0);
}

1
src/dev/arm/gic_v3_distributor.hh
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@@ -140,6 +140,7 @@ class Gicv3Distributor : public Serializable
public:
static const uint32_t ADDR_RANGE_SIZE = 0x10000;
static const uint32_t IDBITS = 0xf;
protected: