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author | Sebastien Griffoul <sebastien.griffoul@intel.com> | 2016-05-24 16:29:39 +0200 |
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committer | Anas Nashif <nashif@linux.intel.com> | 2016-05-26 15:12:25 +0000 |
commit | 8237d0f882124d9aa9e9e79336de79b8f71deabb (patch) | |
tree | 9e60741fea086f8031710983f80bc020ce5ed4c4 /scripts/size_report | |
parent | 0595c47e170a92b25a29e08865fea63d3d5710d0 (diff) |
eth: Fix spurious interrupt issues
The ethernet driver generates a lot of spurious interrupts.
These spurious interrupts have two sources:
1) The Mac Management Counter (MMC) module generates a lot of interrupts
(GMI - bit 27 of the status register). Unfortunately the Interrupt
enable register doesn't allow us to enable/disable it (bit 27 is
reserved). Therefore the only way to mask this interrupt is to mask
all the MMC interrupts (register REG_MMC_RX_INTR_MASK,
REG_MMC_TX_INTR_MASK and REG_MMC_RX_IPC_INTR_MASK). By default
these interrupts are not masked.
2) The RX interrupt is not correctly acknowledged. According to the
datasheet, NIS is a sticky bit and must be cleared (by writing 1
to this bit) each time a corresponding bit, which causes NIS to
be set, is cleared.
Change-Id: I2033973849d87cddc328c65d0d4ad36b5a0c934e
Signed-off-by: Sebastien Griffoul <sebastien.griffoul@intel.com>
Diffstat (limited to 'scripts/size_report')
0 files changed, 0 insertions, 0 deletions