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Octeon: Fix interrupt irq settings for performance counters.

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Octeon uses different interrupt irq for timer and performance counters.
Set CvmCtl[IPPCI] to correct irq value very early.

Signed-off-by: Chandrakala Chavva <cchavva@caviumnetworks.com>
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Cc: Chandrakala Chavva <cchavva@caviumnetworks.com>
Patchwork: https://patchwork.linux-mips.org/patch/2085/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Chandrakala Chavva 2011-02-17 13:57:52 -08:00 committed by Ralf Baechle
parent b32ee693eb
commit 7716e6548a
2 changed files with 5 additions and 7 deletions
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7
arch/mips/cavium-octeon/setup.c
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@ -288,7 +288,6 @@ void octeon_user_io_init(void)
union octeon_cvmemctl cvmmemctl;
union cvmx_iob_fau_timeout fau_timeout;
union cvmx_pow_nw_tim nm_tim;
uint64_t cvmctl;
/* Get the current settings for CP0_CVMMEMCTL_REG */
cvmmemctl.u64 = read_c0_cvmmemctl();
@ -392,12 +391,6 @@ void octeon_user_io_init(void)
CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE,
CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE * 128);
/* Move the performance counter interrupts to IRQ 6 */
cvmctl = read_c0_cvmctl();
cvmctl &= ~(7 << 7);
cvmctl |= 6 << 7;
write_c0_cvmctl(cvmctl);
/* Set a default for the hardware timeouts */
fau_timeout.u64 = 0;
fau_timeout.s.tout_val = 0xfff;

5
arch/mips/include/asm/mach-cavium-octeon/kernel-entry-init.h
View file

@ -63,6 +63,11 @@
# CN30XX Disable instruction prefetching
or v0, v0, 0x2000
skip:
# First clear off CvmCtl[IPPCI] bit and move the performance
# counters interrupt to IRQ 6
li v1, ~(7 << 7)
and v0, v0, v1
ori v0, v0, (6 << 7)
# Write the cavium control register
dmtc0 v0, CP0_CVMCTL_REG
sync