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authorMika Westerberg <mika.westerberg@linux.intel.com>2017-10-02 13:38:35 +0300
committerDavid S. Miller <davem@davemloft.net>2017-10-02 21:24:41 +0300
commit8c6bba10fb9262d7b3a11e86a40621d5b37810a6 (patch)
treedd1ea0a7e55932118808c6721a6da67adf044aa3 /drivers/thunderbolt/nhi_regs.h
parentd1ff70241a275133e1a0258b7c23588b122276c8 (diff)
downloadlinux-8c6bba10fb9262d7b3a11e86a40621d5b37810a6.tar.xz
thunderbolt: Configure interrupt throttling for all interrupts
This will keep the interrupt delivery rate reasonable. The value used here (128 us) is a recommendation from the hardware people. This code is based on the work done by Amir Levy and Michael Jamet. Signed-off-by: Michael Jamet <michael.jamet@intel.com> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by: Yehezkel Bernat <yehezkel.bernat@intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/thunderbolt/nhi_regs.h')
-rw-r--r--drivers/thunderbolt/nhi_regs.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/thunderbolt/nhi_regs.h b/drivers/thunderbolt/nhi_regs.h
index 09ed574e92ff..46eff69b19ad 100644
--- a/drivers/thunderbolt/nhi_regs.h
+++ b/drivers/thunderbolt/nhi_regs.h
@@ -95,6 +95,8 @@ struct ring_desc {
#define REG_RING_INTERRUPT_BASE 0x38200
#define RING_INTERRUPT_REG_COUNT(nhi) ((31 + 2 * nhi->hop_count) / 32)
+#define REG_INT_THROTTLING_RATE 0x38c00
+
/* Interrupt Vector Allocation */
#define REG_INT_VEC_ALLOC_BASE 0x38c40
#define REG_INT_VEC_ALLOC_BITS 4